Supercharged ls3 cars exhaust setups/ back pressure / resonator

[youngson616]

Im tossed up on exhaust decisions.

I couldnt find a clear answer on back pressure and stuff with the supercharged application cars that HAVE long tube headers and NO cats with mufflers. Mine is setup this way, tuned of course, and i apparently had a l99 resonator on mine? ( the big boxey one)? I had it deleted before FI and exhaust upgrades. I think im lacking a little back pressure?

Put down good numbers, just low end rpm decreased and high rpm is very rev happy... my question is can i install the stock resonator to achieve more back pressure and less rasp? It sounds great, just raspy..any input ? thanks.

[DCC1464]

Back pressure is not really a thing, its more of a scavenging issue. But i ran my s/c cammed ls3 with lth, no cats and the stock exhaust (cut out everything, ie straight pipes) with no loss of scavenging. Hell i picked up some rwhp when i went to a full 3" straight pipe system so i doubt that you will have issues with what you got.
As far as the rasp, i only noticed a small window where i had it at, around 2-2.5k rpm under load so i didnt bother trying to get rid of it
Hope this helps