Originally Posted by SgtGoldy

N55 isn't a bad engine, its not as powerful as the N54 but its a lot more reliable. When they came out with the N55 there was such a fuss about the engine that they made a special BMW 335iS and brought the N54 motor back.

You really cant go wrong either way. Throw a JB4 on it, intercooler, DCI & exhaust system and they thing is ready to eat most cars on the road. Upgrade the turbo's and take down M3's, AMGs, even exotics like Ferrari's. Youtube it, theres so many videos on modded 335i's just eating cars alive.

I had full bolt on mine, minus bigger turbos. I feel like that thing was way faster than my AMG... but that also could just be the turbo feel. Either way its retarded fast.