Supercharged exhaust options

[kurt]

Hay all

My mates got a vy calis stock supercharged. He reckons the stock exhaust is restrictive. So wants to know good size piping and brands from extractors back for that model. I dont know alot bout commies so please give me some feedback for my mate.

Thanks Kurt

[chargedvx6]

If he wants to modify the car more later a twin 2 1/2 inch cat back would be good. If he just wants to cruise around in it then a twin 2 1/2 inch into single 3inch would sound good.

[adamc11]

Stock LS1 cat backs (twin 2 1/4") fit onto the S/C 6 i believe and are popular amongst the S/C 6 guys i've been told. I think a twin 2 1/2" cat back would be overkill.

I have a stock LS1 Calais cat back and an aftermarket cat back that is 2 1/4" but less restrictive than the stock system and has a nice note. Let me know if ur interested... i'm in melbourne.

[VT-565]

If he's serious about getting rid of restrictions, then he'll do the whole system.

[chargedvx6]

Stock LS1 cat backs (twin 2 1/4") fit onto the S/C 6 i believe and are popular amongst the S/C 6 guys i've been told. I think a twin 2 1/2" cat back would be overkill.

I have a stock LS1 Calais cat back and an aftermarket cat back that is 2 1/4" but less restrictive than the stock system and has a nice note. Let me know if ur interested... i'm in melbourne.

The ls1 and l67 share the same cat back. VY SS got a revised design which is a slight improvement over the l67 system but before that they were the same cat backs.

Twin 2 1/2 is for a modded l67 and you're right it may be over kill...................if the car is stock

[taztassio]

i have vy SS exhaust going cheap.