Hi all, I want to upgrade my exhaust. First off it's a 96Z, Vortech T-trim, aftercooler, 6lbs of boost...making about 370rwhp. For exhaust I currently have SLP 1 3/4 shorties, stock dual cats, into a Borla cat-back. Was thinking of changing to Hooker 1 7/8 coated long tubes, into a Y pipe, high flow cat and keeping the Borla. Would this worth while improvement? Pros and cons are welcome as well as any different possibilities...Thanks!!!

 

The majority seems to lean toward the long tube set up. I contacted Lngenfelter performance on this very issue whe I was in the proccess of selecting my camshft. They actually told me that for supercharged apps, the mid-length or shorties would be better for scavenging purposes.

I too, would also be interested in knowing if anyone has real-world numbers on a shorty vs. long tube F.I. application.

 

My TPiS 1 3/4" mids seem to work great. That goes into a Y pipe with no cat and a 3.5" Mufflex cat back. I would say a good 1 3/4" mid length set up is the way to go for a setup like that. I would guess that the dual cat setup is killing you a bit even if they are high flow. I don't think LT's would gain you that much for the money your gonna spend. If your looking for more power at the track, then I would say put a cut out or two in there for the track.

Ken R.