Correcting what I said below, It seems 335's built before Dec 2009 is for sure to have forged internals, anything after that no one knows. Also early cars have bolted diffs, which make a LSD swap much easier.
If you want to track the car i would get the evo over the sti and 335. STI's dont respond well to mods compare to the evo, you would also need to upgrade the block sooner than the evo x. The 335 is expensive once you break something. The 4b11t is good for at least 400 wtq, has good aftermarket support.
BMW 3-Series (E90 E92) Forum - View Single Post - The N54 engine pistons are cast (and not forged).
Quote:
Originally Posted by ct63084
Get a 335 good balance between comfort, performance and looks the coupe looks sexy. If you want to go balls out on performance mod get the n54 335i as they have more potential than the n55 single turbo, this is not officially confirmed but one of the guys in e90post opened up the n54 and it had forge internals. 135 is nice but too small.
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