M3 Exhaust

[Rookie]

Alright don't flame anyone, I tried searching for this one. I am wondering if an m3 exhaust will fit on a 328is? I live in a county that does not require emission checks, so I was thinking about gutting a m3 exhaust and sticking that on there. I noticed that triggr is running one on his 325is.

I know, I know I should just pop the 600 bucks for a UUC but job security is an issue right now, and I can get an m3 exhaust pretty cheap. Ideas? What is the sound difference between stock 328 and gutted m3?

[Furious]

yes it does fit, no real performance gains (none noticeable) but it does fit and there is a bit of a sound difference

[catalyst.]

An exhaust doesnt really help HP that much, a little on the top end if any. 4-7 HP is what most claim.. i highly doubt 7, probably closer to 4.

Its mostly about tone and looks.

If you have no emissions laws, gut the cats and buy whatever muffler sounds best to you.

[theruss1an1]

With the m3 muffler a 325 or a 328 will pass smog. And yes, as soon as you can gut the cats. Or run straight pipes, take advantage of your non smog county!! The m3 muffler (exhaust) should run you $150 tops.

-Serge

[97alpineM3]

I'm not sure how your emissions runs in your state... but a regular m3 exhaust from the headers back... including the cats and muffler... would do fine.. the sound is rather good... I have a friend that has the stock m3 exhaust on his e36 M3 and it sounds good imo.

If your looking for a little added sound then thats the first step. Another option is a cat-back hook up from a tuner like AA or UUC or Borla... that will be the next step.. a little louder... but you also risk the emissions test that way.. further more if you go with a track pipe and a tuner exhaust you are by far not going to pass a emissions test.

Good Luck,

Les