BMW N54/N55 E-Series Electric Water Pump Replacement DIY (Video)

For the most part, this is a similar post to our N55 E Chassis MHD post. However, we split up the posts since the E and F chassis N55’s use different apps from MHD. Additionally, the F chassis N55’s are a bit more capable given the EWG design as opposed to PWG. That said, some…

Charge pipes are a common discussion on turbo BMW engines. The charge pipe (CP) is partly responsible for carrying charge air (or boosted air) to the engine. Unfortunately, BMW’s N55 engine uses a plastic charge pipe. The N55 charge pipe is prone to cracking and popping off at higher than stock boost levels. It’s not…

We wrote a similar post for the N54, which seemed to be a popular and informative post for those looking to learn more about the engine’s capabilities. For those who read our post about the BMW N54, it should be noted the BMW N55 engine is not quite as capable as the N54, mod-for-mod, for…

In this guide, we discuss the N55 fueling limits and upgrades available. What are the limits of the N55 fuel system? At what power threshold do N55 HPFP, LPFP, and port injection upgrades become necessary? How does E85 affect the N55 fueling limits? We’ll answer these questions and then some. Additionally, we will list a…