BW single exhaust race vs street/track - where to merge for max power?

[CrookedCommie]

Exhaust experts, I need to replace the ebay muffler on the track car as it has started rattling. I'm looking at the two different Bimmerworld exhaust options - one merges right after headers, the other after section 1. I already have oversized Section 1 straight pipes - which one of these options would make the most power?

Merge after section 1:
https://www.bimmerworld.com/BimmerWo...user-Exit.html

Merge after headers:
https://www.bimmerworld.com/BimmerWo...user-Exit.html

I'm considering the diffuser exit since it looks like the muffler is longer @ 16" vs 10".

Thanks!

[digger]

pure track car after the headers, it'll have nothing below 4500rpm though

[F1Dryvr]

I had ssv1 mated to full resonated race all the way back. Good sound good top end power. Def slugish at low rpms.

I recently added the ss sec 1 and it merges after. Havedt had the chance to test yet but was told(i believe by hassan) that this would help out the low rpm torque

[eacmen]

Unresonated header-back here with what I think are Status Gruppe headers. Makes good power but loud AF with stripped interior.


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[CrookedCommie]

Thanks, car has a 3.91 so it won't be under 4500 rpm much.