i am getting the zzp stage 3 supercharger kit with a 2.7 and a bad-mab header with zzp dp and stage 3 he and dualpass and option b. my question is which would give more performance gain and better sound catted dp or no cat dp?

 

catted will give better sound. Catless will give better performance. prepare to unleash the raspiness of the LSJ, if you stay catted and resonated you may be ok.

 

catless

 

Catless.

 

catless

 

catless, but put a small res in place of the cat.

 

Catless :-)

 

Catless is goin to sound like hell

 

Bad Mab to ZZP 3' Catless DP to Stock exhaust and i sounds just fine.

Here a pull i did last night against a Turbo Civic with my window down. Should hear 2nd,3rd, and part of 4th.


I would go catless just my opinion:

YouTube - ULWizSS GM3 BYT Tuned Vs B16 Turbo

 

I always hear people doin a badmab, and 3" DP on stock exhaust, is it quiet? and too restrictive?

 

For my mods the stock exhaust it to restrictive. Being replaced hopefully next week with the ZZP 3 Catback System.

Other than that it sounds good.

 

bump

 

not cat here!!!!

 

I have the badmab header, catless random technology 3" to 2.75" downpipe, and corsa touring 2.5" catback, and I have zero rasp. It all depends on the size of the piping, and your resonator/muffler configuration. Buy a cheap qualilty resonator and muffler and you will hear the terrble rasp the lsj can produce. Buy a large resonator and muffler, or quality catback, and going catless will sound just fine.

 

whats a good resenator and muffler

 

The answer is in your other thread man

https://www.cobaltss.net/forums/2-0l...-setup-238710/

 

corsa is the way to go