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      04-18-2018, 05:28 PM   #228
sprp85
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Drives: S54/N52
Join Date: May 2014
Location: MA

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2006 E46 M3  [0.00]
2007 E91 328i  [0.00]
Quote:
Originally Posted by chris82 View Post
I currently have stock headers + secondary cats + supersprint resonator delete + BMW Performance muffler. It's great, but could be louder. Thinking of removing the secondary cats and replacing with the Supersprint straight pipes. What do you think? Will I get rasp? Any thoughts or someone with a similar combo?
I had that setup previously.

Supersprnt section 1,2 and PE

Way too droney at cruising speed. Right around 2.5-3k RPM...

Other wise, it will pop crackle for sure, fairly obnoxious at times. (Especially in parking garage at work... Hmm)

Also it will be slightly raspy @ low speed + high RPM but not as much as stock S54s or catless header.

If I were you, as many in Europe do, pick up SS section 1, lose the PE and place 135i stock muffler in place.

Now the above combo is what I would say the best sounding exhaust setup for N52 you will find. It sounds extremely good at high RPM (More of e36 m3 full supersprint race setup type of sound) it will pop/crackle, no problem. But at cruising speed, sounds like PE, maybe slightly louder.
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