Originally Posted by petrolheaduzman
I just joined this forum and was looking into buying a 335i with the n54 engine. I finally saved up enough and am ready to buy my first car. So my question is that what are the common problems with these cars? Has the HPFP problems been fixed? Since this is my first car i plan on keeping it for until 250k or 160miles. Whats the typical life of the turbos? Should i look out for any diverter valve issues as i read that a lot of cars that run the air through the engine instead of a bov have a sludge manifold problems.
Also what are some reliability upgrades you guys recommend? (catch can system, bigger intercooler, bigger oil cooler) Whats the problem with putting a bov on the n54 engine?
I know these are a lot of questions, but since I am putting a lot of savings into this purchase and plan on keeping it for long I want to be sure, this will a reliable car for me. I have driven my friends 335i and I am totally hooked.
Thanks A lot for the future advice.
i would go for a 2008 CPO, best route if you want a n54 and you can pick one up pretty cheap