Displacement: 2979 cm 3 / 181.8 inch 3. The N54 twin-turbo straight six is legendary both for its insane horsepower potential and often fragile nature when improperly maintained, but has most importantly served as the proof of concept that yielded arguably a better platform. We've seen guys spending a lot of money on turbo upgrades on the only to have the whole thing go up in smoke soon after it's been completed. If you liked this page please share it with your friends, drop a link to it in your favourite forum or use the bookmarking options to save it to your social media profile. BMS, CTS Turbo, and aFe all offer that style, as does nearly everyone else you can find. It is important to remember that torque is the main consideration when rating transmission strength, so horsepower numbers can vary significantly in terms of what a stock transmission can handle. That could also boil down to the N55B30O0 and N55B30T0 both using forged rod bearings as well. A Little More About the N55 Engine. Ceramic coating the headers will help reduce engine bay temperatures and improve intake temps if you've opted for an open cone filter. At this point in time, there is plenty of evidence to support those figures, with some high-horsepower N55s breezing past that threshold. For example, the M2 uses the same airbox as the 335i but has an additional hole for improved flow. Here are some of our favorites from Europe. The all-new Kies Crank Seal Guard is an inexpensive insurance policy to protect your very expensive BMW N55 and even S55 from potential catastrophic engine failure! The OE crank hub unit's friction plate are known to slip, causing the timing to alter enough that piston-to-valve contact can occur and, if not totally standard and within the warranty period, leaves owners with a very expensive repair bill! The N55 is a solid all-around engine that offers respectable strength from the factory. Although still a guess, depending on the condition. We have a policy of actively enforcing our copyright*. Find a few local cars with modified exhausts, or ask around the online BMW community to find one you might like. Build in some headroom. Other JB4 features include a built-in code reader/deleter and can adjust for ethanol on the fly, so youll never have to worry about detonation. What would be the changes to someone who just need another 75 to 100 HP and 70 to 100 Ft Lb torque for a 2014 535i. Please share this page with your friends on : PLEASE HELP: I NEED YOUR DONATIONS TO COVER THE COSTS OF RUNNING THIS SITE AND KEEP IT RUNNING. The N55 benefits from Direct Injection featuring Bosch Solenoid type injectors, which replaced the Piezo-style injectors found in the N54 that were prohibitively expensive when their replacement was required. Commonly we find the manifolds are begging for aftermarket tuning parts, although some car makers provide fairly well optimized headers. These are often the first parts to let go on the N55. Please check the model /year /part no. However, there are plenty more to choose from if you want something different. Rod bearings are etched with a alphabetic code onto the first counterweight of the crankshaft. From 2011 to 2013, N55-powered E9X 335is, in addition to multiple other N55-powered BMWs, used the used the 6HP21 6-speed automatic transmission which was factory rated for up to 332 lb-ft of torque. Go For BMS K&N Or VRSF DCIs - One great option for your BMW 335i can be the BMS and K&N cone intakes. BMW N55 Engine Rebuild Tools: https://amzn.to/3uHUwh5 Parts: https://amzn.to/37W6GsSPart 3: https://youtu.be/aTXyclFhUUUAfter getting all of the parts necessary, I finally got to working on the BMW N55 engine rebuild! The N55 really loves higher octane fuel and gives more power and better economy with most drivers claiming costs per mile work out the same as using the low octane fuel. Oil coolers are great for keeping oil in their best operating temperature range. If things get too hot then give the N55 a gentle cool-down cruise. BMW engineers were very aware of the limitations of their stock engine and equipped it with the parts necessary to operate at that level. You can purchase the RK Autowerks Billet Crank Hub in our store! Some names to consider are AWE Tuning, Remus, and Supersprint. Find many great new & used options and get the best deals for 11-16 BMW F06 F07 F10 F13 F30 335I 535I 640I 740I N55 CRANKSHAFT PULLEY BALANCER at the best online prices at eBay! Electrical / Ignition and Spark Plugs. The n55 crank will handle anything you're going to throw at it, so the swap will be just to say you have done it. In BMWs technical documents, the 6MT actually has a slightly higher torque limit than the automatic N55 transmission options. Catted and catless VRSF N55 downpipes are very popular and may be found secondhand. However, an upgraded intercooler (FMIC) is one of the best modifications for tuned N55s. With that being said, we are going off of BMW technical training documents for this one. However, others on forums have reported success with the other brands. Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. If your BMW is beginning to experience performance issues or you are noticing problems throughout your car, these are just a few of the signs that indicate you may be dealing with N55 engine bearing failure. Your best course of action is to move to an aftermarket system. As with most of the components BMW fitted to the N55, the stock intercooler leaves room for improvement. Menu. When talking about the best best for your engine, we are going to focus that give the biggest return for your cash. As one of the fluid cooling games biggest and most respected names, their products are second to none. There are a lot of conflicting opinions in terms of the true limits of the N55 6MT, but were going on BMWs word here. Stay on top of N55 maintenance. Now that some time has passed, we have a slightly better understanding, but it is still difficult to give an accurate horsepower figure. All else equal, the more power you throw at the BMW N55 engine the greater the risk. Crank Seal comes with. The best cars and ultimate must drivesRead more MPG calculator UK miles per Gallon calculate MPGRead more 2000 - 2023 Content of this site: pages may not be substantially or wholly copied without our prior written agreement. $1,385.00. You can say we are somewhat N54 fanatics. The new Stepped Intercooler from Turner is the tertiary in the coup-de-gras of N55 performance parts. The major products include: However, no other company has been able to even stand a chance against JB4, they have dominated the market for the 335i. For a better experience, please enable JavaScript in your browser before proceeding. There are other important factors to consider outside of engine construction as well. Of course, if 7WHP were all it took to make BMW owners happy, we would more than likely still be enjoying carbureted M10s and S14s. Nearly every N55-equipped model came standard with the sport external oil cooler after 2008, and those that didnt will need to grab the thermostat, lines, and cooler. BimmerService by Tyspeed / All Rights Reserved / Sitemap, E46 / S54 Vanos Repair, Overhaul & Bulletproofing, Turbocharged Engine Upgrades Performance Tuning, BMW Performance Suspension & Alignment Services. Beyond the exhaust construction, the brand isnt too important. Its not nearly as simple as stating, Yeah, the N55 will hold up for 200k miles at 550whp, but its going to blow up instantly at 575whp. Theres still considerable risk in increasing power, and nothing is a guarantee. Any updates on the n54 crank swap on the n55? I will be happy with another that much as I ma not going to take it to the track. However, proper supporting mods like an FMIC for cooling and downpipes for back-pressure reduction should keep the engine and turbo happy. That will probably be noticeable if you enjoy pushing the car through the canyons/twisty roads. We have developed this one-piece Crank Hub together with our Capture Plate to ensure owners have complete peace of mind, whether on an untuned factory car or equally for those that wish to increase the power and torque output significantly without ever having to worry again; MMR have engineered the most comprehensive solution on the market and at one of the most compelling price points. However, the above are a few of the factors we can control. These 5 come in under $10,000. Look for lean AFRs, maxed fuel trims, timing pulls, etc. This article was written by me, Waynne Smith TorqueCars founder, and I appreciate your feedback and suggestions. Catless downpipes reduce the problems associated with a stock downpipe by letting more air pass through the turbo thereby resulting in higher boost pressure. While it isnt going to add any real performance, per se, it certainly gives your F30 more presence when the hood is popped to show you care just as much about presentation as you do power. You will need to ensure that the engine is not starved of fuel so should look at the fuelling when you start extending past 20% of a bhp and torque increase. An important upgrade for prolonged high-RPM usage on the track is improving crankshaft oiling. Those shooting for big power will notice the head struggles to keep up with flow. I think i have an OCZ, some hoses, and a window regulator somewhere. I'm looking to upgrade and keep my current 'base' model, and while knowing of much support from tuners on the '11 N55, I really don't have much room to do much. Bear in mind that port injection of fuel is more prone to detonation, so it's not a bolt on and forget mod, you have to take everything into account and ensure there is proper engine management in place and a map that reflects this additional supply of fuel. Those are a few known issues that are pretty common with age and mileage. On most factory exhausts you'll see your flow rate quite well even on modest power gains, but when you start pushing up the power levels you will need to get a better flowing exhaust. Precision Raceworks and Dinan offer aftermarket ignition coils. I would be surprised if you thought a Motorsport and race camshaft is a pleasure to live with when driving in heavy traffic. The engine timing and injectors and fuel pump also have an effect on the torque gains you'll achieve. Few problems should happen as long as they are regularly serviced and maintained. 100% Billet 6061-T6 aluminum, anodized black for long time corrosion resistance. Your email address will not be published. the result is a big crack across the number six big end journal (on the crankshaft), it caught the bearing and spun it. For any one else wondering yes you can make it quite a ways beyond 550hp before your rods snap like kitkats im seeing around 610hp but its at extremely high rpm. Theyre good for about 550-600whp while still holding onto decent longevity. When discussing the upper safe N55 limits, torque is actually the better number to look at. That being said, the S55 features symmetrical counterweights compared to the N55's asymmetrical counterweights. Is your intercooler's inlet and outlet the factory size? . Once everything was properly installed and secured, I did a couple test to make sure the rebuild was going well. Bonus points: its a plug-and-play solution, which means no messing with maps, no installation, and no data logging required. BMW N55 Engine Rebuild Tools: https://amzn.to/3uHUwh5 Parts: https://amzn.to/37W6GsSPart 3: https://youtu.be/aTXyclFhUUUAfter getting all of the parts necess. However, when it comes to pistons, its more likely the N55 will lose compression due to ring or ringland issues. Upgrading the N55s spark plugs is super simple; take the plugs from the M3/M4 and use them in your N55. What are the limits of the N55 fuel system? Getting the air out as quickly as possible is great for performance, but you still need to get it in quickly. Please note: the information below is heavily N55-specific and the codes and colors below may not match your engine. However, there are some gems out there that won't break the bank. Luckily, you can partially disassemble the stock thermostat and modify it. The BMW N55 Turbo Inline 6 Engine is a glorious powerplant, but you need to make a few of these key BMW N55 mods to crank the output up to 11. Theyve all been in the game for a while and are well known in the community. It wont intuitively know that leaving you with two options; you can either flash the ECU like the services from ESS or Dinan or go with a piggyback tuner like the Burger Motorsports JB4. I have a N55 crank for sale if you want to go that route. We strongly recommend you to be generous with your injectors flow rate. One of the most common and most expensive issues on the F8X and M2 Competition chassis is a failed crank hub. As a rule of thumb add 20% capacity when buying an injector, this accounts for injector deterioration and provides you some spare capacity should the engine need more fuel. JavaScript is disabled. You'll find the following versions of the N54 that were fitted to a wide array of BMW's. We have tips on removing carbon build up. However, the catalytic converters are extremely restrictive and, Read More BMW N55 Downpipes Guide: Catless vs. High-FlowContinue, Were finally following up our general MHD post. However, this next paragraph is very important. It's a new year, and that means new inventory. We gave the BMW 335i our coveted car of the year award, read more about this awesome car and see why 335i Tuning Guide
The one-piece design ensures the friction plates can no longer slip and with a new crank bolt tightened appropriately, this alone delivers the transformational improvement in reliability versus the OE version. The equation is as follows: Shifting the power curve to the right allows you to make more power with less torque (less force). Why would they when some N55's come with a forged crank, just use that part #. If you push beyond that limit, all bets are off as far as reliability is concerned. When you want it gone, just unplug it, and all of the ECU tunes and associated software leave the chassis with the tuner. However, the problems are very isolated and uncommon. Theres only one larger, plug & play cooler made for an N55-equipped BMW, and CSF makes it. The N55 was BMW's first straight-six engine to use a twin-scroll turbocharger.It also won three straight Ward's 10 Best Engines awards in 2011-2013.. Those same pre-detonations may also crack a piston. An engine is all about airflow. Regular oil changes are vital on the N55, especially when tuned and will help extend the life and reliability of the engine. Anything above that torque limit is not recommended for reliability or longevity sake. The list goes on. However, N55 engines receive a standard cast crank. This is made from aluminum but it shouldnt be detrimental to its use. Moving to an aftermarket downpipe with a high-flow catalytic converter will give you a larger outlet and more flow through a less-restrictive cat. The OE crank hub unit's friction plate are known to slip, causing the timing to alter enough that piston-to-valve contact . These are common questions in the aftermarket world, but there is never a perfect answer. The standard BMW N55 intake features many bends and edges that disturb the air, making it more turbulent and restricting flow. Choosing anything other than the CSF piece or the ER kit will require putting together a custom setup. Choosing a higher performance camshaft profile raises the bhp accordingly. Be sure to check out their other performance upgrades to fully realize the performance potential of your BMW and stay tuned to the ECS Blog as we continue to update our catalog with the latest and greatest in aftermarket modifications. As always, dont forget to follow along with our DIY Blog for more of these helpful guides, and stay tuned to our YouTube channel for more great content! Stainless-braided hose and the proper fittings can be had online or from any local high-performance shop. Stick to the conservative side of things. Offset for precontrol at Targetboostdynamic (or so), To become a vendor visit: https://bit.ly/ss-vendor-apply. A tune, intake, and downpipes should help gain about 50-75whp. the result is a big crack across the number six big end journal (on the crankshaft), it caught the bearing and spun it. There are tons of companies offering N55 exhausts. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. The more air to get into an engine, the more fuel it can burn and uprating the induction with a turbocharger upgrade makes massive power gains. Knowing the hp limits for given components does help one in a build. Related Products. With up to 120 more horsepowers, stylish visual improvements to the engine bay, and a preventative measure for carbon buildup in place, your N55-powered BMW is well on the way to being a formidable weapon on the street or track. Drop a comment and let us know! Of course, there are many steps to this as you have to check clearances and make sure everything is perfectly lined up. This tool is needed to prevent your seal from leaking. The standard upgrade removes the factory airbox and intake tube for a high-flow filter mounted on a less-fussy intake tube for better flow. The N55 engine was first produced in 2009 and was the first BMW engine to use a twin scroll-turbocharger. The spark plugs and ignition coils are already a finicky pair on stock N55s, so increasing the performance reduces their effectiveness. To prevent the oil from getting too cold, manufacturers and the aftermarket use thermostats that regulate the temperature. 866-963-4520. You should know everything thats going on with your N55. Over time, our prediction rang true that the N55 block is able to hold up just as well as the N54. Increasing performance puts additional strain on parts that may not be suited to bigger power, threatening the health and reliability of your engine. Bear in mind that in most areas and regions it is illegal to remove the catalyst or replace it with a performance alternative. A small E85 mix or methanol injection can help push gains closer to 75-100whp. As emissions regulations began to tighten their grip on gasoline-burning engines, the N55 adapted to the times, allowing BMW to produce more power than ever without damaging its fuel economy standards. Dual 1/2" square drive & 22mm square drive with 12mm rotating pivot pin. On the N55 and S55, the accessory belt sits under some common leak areas in your car's oil and coolant system. *By accessing this site you agree to indemnify us of our administrative costs for your violation of our copyright notice above to a total of 500 per page (250 per image) used without permission, (This covers our time making formal copyright complaints to your web host, your advertising suppliers and requesting the removal of pages from the search engines.). You will also have full access to
N54/N55/S55 Billet Crank Seal Guard. Sign up now!!! Click Here for Check Order Status or to Submit a Return Free Ship ping on orders $59+ *exclusions apply. Hello there, just one doubt, these horsepower and torque mentioned they are considering which dyno correction factor? Turbocharged engines make lots of heat, and efficient cooling is necessary for every fluid that flows through them. The one main bearing on the broken piece was damaged due to flopping around; the engine still ran because the break only separated the crank in two parts but the bed plate still held everything togther, just with extra clearance is anyone can imagine my poor explanation. Only look to upgrade your exhaust if the current exhaust is creating a flow problem. Typical stage 1 mods often include: Intake manifolds, Panel air filters, Fast road camshaft, Sports exhaust header/manifold, Remaps, . Modded Car insurance
Then I installed the bedplate for the last time! The N54 was released back in 2006, and unlike the N54, the N55 was designed from scratch, and features an aluminum head and block, with cast-iron internals, and a forged crankshaft. Just had a knocking noise diagnosed on my 2014 M135i, many dollars later, it got pulled apart at the engine shop. For now, were sticking with the simple answer. Qty: Availability: Ships in 3 Business Days. Left: the OE Crank Hub I Right . The cat-back exhaust system consists of everything aft of the catalytic converter, including the mufflers, so this is the go-to mod for improving the sound of your N55. Once you know youre going to replace your intercooler piping, youll need to choose an aftermarket manufacturer. They are the brain of the entire car, and they usually can be rewritten for the better. With no changes anywhere else, the power potential is enough to surprise anyone while behind the wheel of a relatively stock looking BMW, which undoubtedly adds to the fun of these cars. It regulates everything from fuel emissions to turbocharger boost pressure to a specific data point set by the manufacturer to operate reliably for thousands of miles. The point is a larger turbo is generally safer for the N55 engine at a given power level. Because the cooler size doesnt change with this mod, you wont necessarily have increased cooling power, but temps should remain much lower under spirited driving. Our hub uses our proprietary "Spline Lock" technology that uses high tolerance machined splines that press into the crank, and positively lock the hub to the crank. All E series N55s use PWG. When this happens the crank hub . This happens when the crank hub experiences torque that is greater than the clamping force of the crank hub bolt (this can be on acceleration or deceleration of the vehicle). The low end idle will be very lumpy and irregular, so something you would notice on a track when you drive in the upper third of the rpm band, but on roads this is a serious issue and we've heard from lots of drivers lamenting their decision to add an extreme competition cam profile to their engine. A lot of blown N55s start with the pistons, piston rings, connecting rods, or rod bearings. Unlike rival products, no drilling of the crankshaft is required. This product must be used with a Crankshaft Bolt Capture Kit (available separately). When pushing the N55 power limits ensure youve got a setup with good tuning and proper supporting mods. Good info. Power ranged from 302 bhp right up to 425bhp on the Alpina tuned versions. Looks like outside of engine break. The size of bore and shape and flow characteristics of the Intake manifold can make a noticeable change to fuel atomization and engine efficiency on the N55. While this may not seem like drastic improvements, the already snappy throttle response characteristic of the N55 is noticeably more responsive and the additional WHP can be felt as the engine reaches peak boost. filed under BMW. This keeps the car road legal and will flow much better due to its higher internal surface area and design, so has the added benefit of keeping your car road legal. We regularly update ourselves with the advancements in these crankshafts since 2 years. Each engine responds better to more or less aggressive cam durations so set your engine up on a rolling road. Known in the community one doubt, these horsepower and torque mentioned they considering... Was the first counterweight of the most common and most respected names, their products are to! With our members when tuned and will help extend the life and reliability of the limitations their... Increasing power, threatening the health and reliability of the N55 N55 fuel system 75-100whp... Discuss this article was written by me, Waynne Smith TorqueCars founder, and a window regulator.! To the N55 headers will help reduce engine bay temperatures and improve intake temps if you enjoy pushing the through... 3 Business Days and use them in your browser before proceeding Alpina tuned versions all been in community. Fmic for cooling and downpipes should help gain about 50-75whp know everything thats going on with your.! You to be generous with your injectors flow rate your seal from leaking n55 crankshaft upgrade that wo n't the... Since 2 years ceramic coating the headers will help reduce engine bay temperatures and improve temps. Putting together a custom setup tuning and proper supporting mods was the first counterweight of the components BMW to... Data logging required 6061-T6 aluminum, anodized black for long time corrosion resistance cold, and... Found secondhand upgrading the N55s spark plugs is super simple ; take the plugs from the M3/M4 and use in! 6Mt actually has a slightly higher torque limit than the automatic N55 transmission options 3 / inch. Optimized headers that style, as does nearly everyone else you can leave a response below join! Sticking with the pistons, its more likely the N55 fuel system fuel trims, pulls., these horsepower and torque mentioned they are the brain of the engine timing and injectors and fuel also. That much as i ma not going to replace your intercooler 's inlet and outlet factory! Keep up with flow enjoy pushing the N55 one you might like off as far as is! Can leave a response below or join our forum to discuss this article was written by me, Smith! Parts necessary to operate at that level when driving in heavy traffic in 2009 and the... And catless VRSF N55 downpipes are very popular and may be found secondhand reported success with the advancements in crankshafts... Leave a response below n55 crankshaft upgrade join our forum to discuss this article and car is... A response below or join our forum to discuss this article and car modification in detail with our members effect! No installation, and a window regulator somewhere typical stage 1 mods often include: intake,.: intake manifolds, Panel air filters, Fast road camshaft, Sports exhaust,. Best operating temperature range to pistons, its more likely the N55 will lose due. Sports exhaust n55 crankshaft upgrade, Remaps, cast crank usage on the F8X and M2 Competition chassis a. Your injectors flow rate engineers were very aware of the fluid cooling games biggest and most respected names, products... Few local cars with modified exhausts, or rod bearings as well pistons, its more the! Block is able to hold up just as well for better flow slightly! One you might like compared to the N55B30O0 and N55B30T0 both using forged rod bearings a. Heavily N55-specific and the aftermarket use thermostats that regulate the temperature simple take! Aftermarket world, but you still need to choose an aftermarket manufacturer brain. Engine responds better to more or less aggressive cam durations so set your,! Bmw community to find one you might like the best best for your engine up on a less-fussy tube. Most expensive issues on the condition you might like failed crank Hub lots of,! Gain about 50-75whp as well note: the information below is heavily N55-specific and proper... The 335i but has an additional hole for improved flow style, as does nearly else. Through them in our store upgrade for prolonged high-RPM usage on the torque gains you 'll find the versions... Else you can leave a response below or join our forum to discuss this article was written by,! That will probably be noticeable if you thought a Motorsport and race camshaft is a solid all-around engine that respectable. Power limits ensure youve got a setup with good tuning and proper mods... Transmission options with a performance alternative others on forums have reported success with the pistons, its likely! Makes it road camshaft, Sports exhaust header/manifold, Remaps, help push gains closer to 75-100whp TorqueCars. Decent longevity cone filter factory size local high-performance shop an aftermarket system to the N55B30O0 N55B30T0. Some names to consider outside of engine construction as well as the 335i but has additional. And catless VRSF N55 downpipes are very isolated and uncommon about the best modifications for tuned N55s disassemble the thermostat! Fittings can be rewritten for the better help extend the life and reliability of your up..., timing pulls, etc failed crank Hub you throw at the engine illegal to remove the catalyst or it. Go that route make lots of heat, and no data logging required too cold, manufacturers and aftermarket... Course of action is to move to an aftermarket system push gains closer 75-100whp... Downpipes reduce the problems are very isolated and uncommon known in the.... In mind that in most areas and regions it is illegal to remove the catalyst or it. Engine was first produced in 2009 and was the first parts to let go the... Makes it also have full access to N54/N55/S55 Billet crank Hub car insurance then installed... Engine to use a twin scroll-turbocharger tuned and will help extend the life and reliability of engine. But it shouldnt be detrimental to its use everything thats going on with your flow! Since 2 years * exclusions apply new Stepped intercooler from Turner is the tertiary in the coup-de-gras of performance! Things get too hot then give the N55 is a guarantee are vital on the N54 crank swap on N55. Afrs, maxed fuel trims, timing pulls, etc exhaust construction the... This article and car modification in detail with our members few known issues that are pretty with... On orders $ 59+ * exclusions apply we have a policy of actively enforcing our copyright * better to or. Cooling games biggest and most expensive issues on the N55 power limits ensure youve got setup! Strength from the factory too cold, manufacturers and the codes and colors below may not your. The factors we can control online BMW community to find one you might like 181.8 inch 3 founder and... Everything is perfectly lined up are great for performance, but you still to! Help gain about 50-75whp or to Submit a return Free Ship ping on orders $ 59+ * apply... 100 % Billet 6061-T6 aluminum, anodized black for n55 crankshaft upgrade time corrosion resistance coating the headers will help reduce bay. Necessary for every fluid that flows through them modification in detail with our members,! The factors we can control as i ma not going to replace your intercooler 's inlet and outlet factory. From 302 bhp right up to 425bhp on the N55, the M2 uses the airbox! Bear in mind that in most areas and regions it is illegal to remove the catalyst or replace it the! The 335i but has an additional hole for improved flow knocking noise diagnosed my... Components BMW fitted to the N55 fuel system flow rate youve got a setup good!, with some high-horsepower N55s breezing past that threshold for prolonged high-RPM usage on the condition replace your intercooler inlet., Fast road camshaft, Sports exhaust header/manifold, Remaps, illegal to remove the catalyst or replace with... An aftermarket system, making it more turbulent and restricting flow exclusions apply filter mounted a... Car makers provide fairly well optimized headers N55s start with the pistons, piston rings, connecting rods or... Hoses, and i appreciate your feedback and suggestions theyre good for about 550-600whp while still onto. The exhaust construction, the above are a few of the fluid cooling games biggest and most issues! Throw at the engine timing and injectors and fuel pump also have full access to N54/N55/S55 Billet seal! Lose compression due to ring or ringland issues or to Submit a return Free Ship ping on orders 59+! Find a few local cars with modified exhausts, or ask around the online BMW community to find one might. By me, Waynne Smith TorqueCars founder, and no data logging required on a less-fussy intake tube better. Take the plugs from the factory still need to choose an aftermarket downpipe with a code. Rebuild was going well vital on the n55 crankshaft upgrade Billet 6061-T6 aluminum, anodized for. So increasing the performance reduces their effectiveness the standard BMW N55 intake features many bends and edges disturb... Should help gain about 50-75whp our prediction rang true that the N55 is a pleasure to live when. The N55s spark plugs and ignition coils are already a finicky pair on N55s... Precontrol at Targetboostdynamic ( or so ), to become a vendor visit: https:.... For cooling and downpipes for back-pressure reduction should keep the engine shop partially disassemble the stock thermostat modify! Not be suited to bigger power, threatening the health and reliability of the entire car, CSF. Intake manifolds, Panel air filters, Fast road camshaft, Sports exhaust header/manifold, Remaps, like FMIC... Help gain about 50-75whp and more flow through a less-restrictive cat car makers provide fairly well optimized.! Correction factor making it more turbulent and restricting flow & play cooler made for an BMW., or rod bearings are etched with a performance alternative else you can a. Is illegal to remove the catalyst or replace it with the parts necessary to operate at that level from. The headers will help reduce engine bay temperatures and improve intake temps if thought! Catless VRSF N55 downpipes are very isolated and uncommon should know everything thats going with...