Performance Exhaust

[dh58]

I've tried searching google and here and I can't find the answer to this question.

Does a performance exhaust improve performance?

If so which ones for the 135i increase Hp and how much?

[1NNO_35]

Gains 4 hp. Can't remember where I saw that but it was somewhere in BMW's pages.

[1SerieStud]

Originally Posted by 1NNO_35

Gains 4 hp. Can't remember where I saw that but it was somewhere in BMW's pages.

4-5hp is correct. The stock exhaust is quite free-flowing as it is, so don't expect much performance out of BMW's Performance exhaust. One thing is for sure though, sound is incredible, specially mated to the new N55 engine!

I will be ordering this exhaust in a week

[dh58]

Is this any performance exhaust or BMW's performance exhaust?

[new2the3]

I dynoed my car at 275hp, a stock 6AT dynoed right after me at 267hp. It's an exhaust for sweet sound, not power.

[dh58]

Thanks guys!