Dynamometer Results & Comparisons - Kooks headers w cated y-pipe

I had Kooks stainless steel headers with the cated Y-pipe installed yesterday @ Dez racing.

The results 24 rwhp & 15 rwtq. :nod:

car has SLP LID, Magnaflow Cat-back, Kooks 1 3/4 headers w/cats.LS1 Edit tune.

before headers 309 rwhp & 325 rwtq
after headers 333 rwhp & 340 rwtq

Did you have any headers before the install or stock manifolds?

Stock manifolds & cats.

Nice, could be as much as a 30rwhp gain without the cats. :cheers:

3 QUESTIONS
what year is your car?
what trans?
how did the area under the curve look?
thanks

2000 SS
M6
same gains in all rpm ranges.