Update after headers (stainless works)
Heres the graph Red was befor tune blue after tune.
Heres the graph Red was befor tune blue after tune.

Trending Topics
The Best V8 Stories One Small Block at Time
was going to ask the same thing
393 rwhp with stock manifolds is a lot of power. I agree that the headers should have picked up more then 15 rwhp along with tuning based off your previous #'s.



