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      06-26-2018, 11:03 AM   #1
dwashy
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Drives: 2006 E90 330i
Join Date: Jan 2018
Location: MO

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N52 Exhaust Help (Headers + ?)

Hey all,

My cat-less headers are set to arrive today, and my BPC tune just landed in my inbox. I got the 'burble' tune and as such will need my secondary cats removed. I'd also like to get rid of the stock muffler as it's heavy as $h!t (and flows poorly?)

However, I'm thinking with cat-less headers, secondary cat delete, and a muffler delete it will be way too loud. I ultimately do not want to end up with this sound here.

I've heard some say that leaving the resonator in can cause rattle due to excess pressure being pumped through it (see here). I've also consistently heard that to keep the ricey/raspy sound at bay a resonator must be kept in place on the exhaust (see here)

So I guess my questions are:
  1. Should I keep existing resonator in place, remove it, or remove it and replace it?
  2. Does anyone have experience with cat-less headers, secondary cat delete, and muffler delete?

I've attached a borrowed image to give a visual aid
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