N54 Boost

I have a set of stock N54 downpipes from my 335i. Removed them when I went catless. Theyre in good condition, cats still intact. Located in Germany. 150 EUR plus shipping. PM me.

2 months ago

Is this the full MHD license or the lite version? And can it be transferred to a different VIN? Interested for my N54 335i.

2 months ago

the F10 5 series is a better drivers car than the F30 3 series. better balanced, more comfortable, and with the N55 its just as fast. the 3 series tax is real - people pay more for...

2 months ago

my N54 mechanic told me that the extended oil change interval is the single biggest cause of premature engine wear on modern BMWs. he sees it constantly. just change it every 10k a...

2 months ago

coming from the N54 world, the B58 is a dream in terms of reliability. my buddy has a 340i with 180k km on the B58, original everything except water pump. these engines are tanks

3 months ago

Yeah the B48 water pump is a known weak point. Theres been a ton of failures reported around 50-70k km. The plastic impeller cracks. Definitely push for goodwill coverage. BMW know...

3 months ago

had this exact symptom on my N55. turned out to be the electric water pump weeping from the electrical connector. very small leak that only happened when hot. replaced the pump and...

3 months ago

the E39 is peak BMW. nothing they make today has the same feel. the steering, the ride quality, the proportions - its perfect. just make sure the DISA valve is working (common fail...

3 months ago

The N54 in the F01 responds just as well to tuning as the 335i — same engine, same turbos, same potential. With a stage 1 MHD or BM3 map on 98 octane you should see 380-400hp easil...

3 months ago

Leaning towards the Pure turbos route. Might as well do it right. Anyone know a good shop in Germany that does N54 turbo swaps? Preferably someone who knows these engines well.

3 months ago

Running Pure Stage 2 turbos on my N54 335i with full bolt-ons. Making 580whp on E85. The car is an absolute monster but I had to upgrade basically everything: Pure Stage 2 turbos 1...

3 months ago

Try doing an adaptation reset. Disconnect the battery for 30 minutes, then reconnect. The ECU will relearn the new intake characteristics.

3 months ago

Great tips! I would add: check the car on the ADAC used car check website. They have reliability ratings for every BMW model and year.

4 months ago

what oil are you using? im also running stage 2 N55 and wondering if I should use a thicker oil for the extra heat

4 months ago

Dont panic! The ECU is probably not bricked. You need to do a recovery flash via bench (not OBD). Find someone with a bench tool like KTag or CMD Flash who can recover it.

4 months ago

Change the fluid! ZF recommends it for a reason. "Sealed for life" means "sealed for the life of the warranty." After 80k km the fluid degrades and shifts get rougher.

5 months ago