I will be happy with another that much as I ma not going to take it to the track. Looks like outside of engine break. The N55 replaced the BMW N54 engine and was introduced in the F07 5 Series Gran Turismo.. It turns out a simple process issued by BMW is the fix. 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. Please help us improve these tips by sending us your feedback in the comments box below. In fact, we have. For a better experience, please enable JavaScript in your browser before proceeding. Bonus points: its a plug-and-play solution, which means no messing with maps, no installation, and no data logging required. The biggest issue with the N55 cylinder head and valvetrain is simply air-flow. We have tips on removing carbon build up. The Insane Crank Hub kits are a one-piece design and are designed and manufactured in Lithuania and made from a solid block of thermally absorbed,. Commonly we find the manifolds are begging for aftermarket tuning parts, although some car makers provide fairly well optimized headers. Thats alright for normal driving but much too hot for anything else. 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. Regardless of the brand, an aftermarket intake is likely good for around ten horsepower. We spent We could go on and on. 908 DONATA COURT This kit alone reduces weight and intake air temperatures while simultaneously improving the rate and volume of airflow directly to the turbo. Calculate MPG 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. Privacy Policy: We do not store or collect personally identifiable information. 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! Depending upon the maps and the supporting mods youve done for your car, expect to see a horsepower increment of 60 to 80 hp with these tuners. $763.55 + $87.38 shipping. N54/N55/S55 Billet Crank Seal Guard. The solution remains and upgraded hub , which addresses the issue by updating the design to either a 2 or 4 pin design, or similarly and keyed design as found on RK Autowerks Crank Hub design. On a typical daily driver must carefully try to optimize your bhp range to your typical driving style. 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! Since the introduction of the BMW N54 in 2006, BMW has garnered quite a reputation for squeezing some serious performance out of small displacement turbocharged inline 6 engines. Duration of stock exhaust cams is as follows- at 0.020, 0.050 and 0.200 N52 used- 221.2*, 190.3*, 74.1* Has anyone successfully swapped a cast N55 crankshaft with a forged N54 crankshaft? Prevent your sepentine belt from being sucked into your engine! Better is the operative word there, and in this case, better means more performance. However, N55 engines receive a standard cast crank. Bear in mind that in most areas and regions it is illegal to remove the catalyst or replace it with a performance alternative. $1,385.00. The BMW N55 engine is a younger brother to the N54 and first came out in 2009. It will add some stress, of course. Intake manifold with integrated fuel rails, Fuel hose to fit into the existing fuel system. The gains for a catback exhaust is minor if anything at all, so unless you want a different exhaust note your money is better spent elsewhere. Ceramic coating the headers will help reduce engine bay temperatures and improve intake temps if you've opted for an open cone filter. CP-FPS-N55 . The initial air intake happens through a small hole in that airbox. Here are some of our favorites from Europe. VTT "Spline Lock" Crank hubs are CNC manufactured from 440C tool Steel with a Rockwell rating of HRC60 for the ultimate in durability, and toughness. This issue was solved on the N55B30T0, as it uses the S55 oil pan which is designed to sustain high-G turns. 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. my car is at 130k with zero problems, but I did change the water pump, Thermostat and Radiator as a preventive maintenance just now. Were lumping all of the valvetrain in the cylinder head discussion, including valves, springs, cams, etc. These engines span back to 1933 with the introduction of BMW's first automotive inline-6, the M78. When problems occur then fix them in a timely manner. Altering your camshaft will make a dramatic difference to the engine bhp. Flowing and porting the Head - Head work will get air flowing into the engine while removing turbulence or restrictions. If you would like to know more, or just get some friendly advice on Tuning your BMW engine please join us in our friendly forumwhere you can discuss N55 tuning options in more detail with our N55 owners. Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. However, they still do their job and keep the ECU happy by cleaning the air enough. This tool works well, able to rotate the crankshaft tool fits snug. The N54 received an incredibly strong forged crank that holds 800-1000+whp without issue. BMW was not consistent on which codes correspond to specific colors. You can say we are somewhat N54 fanatics. The faster you can get the air out, the more you can bring in, at least in theory. That's just dumb. 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. Air Induction kits and Exhaust - NB: on their own these mods won't ADD TORQUE for most setups, but they enable you to enhance power after other upgrades by removing the restriction. Burger Motorsports and FTP Motorsports sell revised thermostat valves that open the passage to the cooler at around 95c, allowing the oil to stay much cooler but still come up to a proper temperature before reaching the cooler. Ensure youre running the proper fueling. (In some cases, as the factory ECU is locked flashing is not an option, so an aftermarket ECU is the route to take, and many of these will outperform factory ECU's but make sure it has knock protection and that you get it set up properly.). 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.. Its still a fairly strong motor, but seems a little less tolerant to abuse. Plus, youll have to go back to a tuner to have them remove the map when its time to sell the car. Pushing more power out of the N55 is generally considered easy to do. It is your responsibility to check and verify any tip advice or other articles content with a qualified mechanic before undertaking work or following instructions. I will post back as it goes along. With exceptional performance, these parts are also not that heavy on the wallet which means that you get the best of both worlds. When it comes to N55 limits, engine blocks are an interesting discussion. Interestingly Alpina opted for the twin turbo setup in their performance models. LS cranks have broken due to a damper problem. Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. Flukey failures happen. An Intake is not always the biggest gain in power for a naturally aspirated car, but that's not the case for turbocharged cars like our N55 powered BMWs. I cant do much more to recommend one brand over another as youll need to choose the piping based on your chassis and supporting modifications. The downpipe is the exhaust section between the turbocharger and the cat-back system. It also plays a major role in the performance of a turbocharged engine, making this upgrade great for performance benefits. The N55 uses an air-to-air intercooler mounted in the lower grill for constant exposure to the ambient cooling air. 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. One VTT Billet N54/N55/S55 Crank Seal Guard. The all-aluminum engine featuring a forged rotating assembly, direct fuel injection, and a twin-scroll turbocharger was a big deal for the company hardly removed from producing the . BMW is no stranger to the turbocharged engine. Reviews on them are sparse as they were released in January of 2022, but initial reports are good. Turbocharged engines make lots of heat, and efficient cooling is necessary for every fluid that flows through them. Your best course of action is to move to an aftermarket system. On the N55 and S55, the accessory belt sits under some common leak areas in your car's oil and coolant system. We wrote an article about basic N55 bolt-on mods here. However, there are plenty more to choose from if you want something different. "Thanks for reading our N55 tuning guide". 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. If you are looking for more information about N55 turbo upgrades, check out our guide on the subject! 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. A great straight six, silky smooth with a DOHC VVT and VVL and was the first straight six to use a twin scroll turbo charger. We have a policy of actively enforcing our copyright*. Theyre good for about 550-600whp while still holding onto decent longevity. In this article, we lay out the N55 engine limits in a straightforward way. Tuning and supporting mods are one of the most important topics. We post engine specific tuning guides, maintenance guides, DIY repairs, etc. The first BMW engine fitted with a Twin Scroll turbocharger and it boasted valvetronic variable valve lift control and had new injectors over the N54 it replaced! You want to keep an eye on the engine parameters often. Consider installing a larger oil cooler to avoid any issues. 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. Having installed a 3.3 BigBoost rated @ 620whp myself. 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. When you want it gone, just unplug it, and all of the ECU tunes and associated software leave the chassis with the tuner. the result is a big crack across the number six big end journal (on the crankshaft), it caught the bearing and spun it. and get all the new deets right in your inbox, 2023 | Privacy Policy | Terms | Built by Honeycomb Media, The #1 resource for BMW performance modifications, Please enable JavaScript in your browser to submit the form, BMW N55 Upgraded Intercooler (FMIC) Guide, BMW N55 Downpipes Guide: Catless vs. High-Flow, BMW N55 E Series MHD Flash Tunes Horsepower Gains. Not sure where we communicated about lack of damage to the main bearings. 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