I want to know where the best place to start tuning in my combo would be. Headers, Borla cat back, no cat y-pipe, maf mods. stock 3.23 gears and auto trans. I ran a best of 13.59, but my mph has
been down since the headers and no cats. Where should I start looking for power losses? Any tuning help?

 

You need to start with some data logging software. Make some log runs and see what needs to be changed.

 

ttt

 

dynotune fixes all