re-tuned my mostly stock SS
It made 301hp/325tq bone stock with a slowmaster on it before.
Since then I put a single magnaflow, hand ported throttle body, and a lid on. Car still has stock junk y pipe and cats, still has uncut airbox/egr.
This time around I coaxed 326hp @5600rpm and 335tq @4500rpm out of it.
I think its pretty decent for a ls1 intake/auto car with stock junk still.

