2024年11月17日 · BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > n55 Misfires & Valvetronic Codes after replacement

2023年11月12日 · BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > N55: Full Technical Training PDF Google Search

2015年11月21日 · The N55 does not have true Positive Crankcase Ventilation, it literally just sucks. The N20/N26 on the other hand has an extra hose drawing fresh filtered air into the crankcase at all times. The extra flow of ventilation is likely the reason that the N20/N26 has such a large rubber PCV hose on the front of the engine compared to the small ...

2021年11月25日 · I have a similar chirping/ringing/whirring noise coming from near the PCV area. The car has now done 50,000KM and it is a 2011 n55 335i model. I performed a quick test as described for the water test. There wasn't any bubbles at low revs, however, when I hit the throttle, I can see the water being sucked in/out. Can this also be a dead PCV issue?

2021年5月19日 · Assuming the N55 VVT motor is powered the same way, it's probably worth a quick look (which I assume it is, since it's way more current than you want running through the DME). I think the N55 VVT motor does actually have the position sensor - except it's built into the motor itself, instead of being on the eccentric shaft like the N52.

2015年8月29日 · Bmw tech perspective here. The N55 is a better more reliable engine than the N54 was. Actually issues with the n55 are fairly few. On occasion I have had to do the valvetronic motor, thermostat, and boost control solenoid. Cracked vacuum lines can …

2021年7月12日 · F30 n55 issues are minimalized to basically just the ofhg. Also the EWG n55's make better power and have superior boost control as opposed to the pwg ones, aka 2013 n55's and prior. You'll find it way easier to make power. And on a semi related note, early f30's still use the CIC from the e9x era, as opposed to NBT or NBT Evo later on.

2021年1月19日 · Update to my original post, I ended up getting it diagnosed and the actuator and essentric shaft were apparently bad with the bmw test plan they ran, and they decided to price match FCP EURO on parts which brought it down nicely, and found my FRM went bad as well so bmw is gonna replace the FRM, the actuator and seal, essentric shaft, sensor, oil squirter,, …

2020年11月17日 · You can get to 400+ pretty easy and cheap on an n55, that's where I'm sitting. Stock turbo, FBO, and tune. I spent extra on sport cat downpipe because I live where we have to do emissions testing and didn't want to deal with the hassle. But getting to 500+ is where it gets expensive. If you're thinking about n55 and F3x, make sure you get EWG ...

2020年3月5日 · BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Anjuna's N55 Tuning Thread Google Search