Quote:
Originally Posted by Gummie
On my 335i I went for charge pipes and catless down pipes from evolution racewerks and JB4. I've read online the charge pipes from bmw are plastic and break easily. IMO downpipes are very good bang for your buck for performance.
After that I went MPE with some midpipes that I forgot which brand it came from. I've heard many good things about BM3 but there are a few Jb4's on sale second hand if you want a simple piggy back.
Have fun modding!
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Pipes aren't breaking because they are plastic. That's an inaccurate assumption that gets repeated on the Internet. There are plastic air pipes all over these engines that don't make a habit of breaking.
It's specifically the F-Series N55 charge pipe that has a high incidence of failure even with a stock tune. It is a poor design with a 90 degree bend. It always breaks at the bend or at the coupling end near the bend where it attaches to the throttle body. The other BMW plastic pipes are straighter and do not have the same failure rate. See photo.