hi guys,
so i bought my new 335i in June, now i was wondering, because all you are good and know more then me
so my question is: if i want to change stock exhaust into some aftermarket, what would be the best option, i mean also to get more HP when changing exhaust, also very important is that driving would be not so noisy inside a car? This is my question
Please write all your opinion in here.
Thank You
