PI head porting gains

[XtorT'r]

What kind of power increase has anyone made after doing a stage 1 - 2 - 3 PI headporting on your 99+ stang? Hopefully you had it dyno'd at some point before the upgrade. I don't wanna know about the 96-98 because you get a big gain just from the PIs' themselves, and I thought there was some weird compression issue there too . I don't really wanna know what someone "thinks" it "Could" make.. hehe

 

[XtorT'r]

Geez I thought some of you guys actually upgraded your stangs? is the only thing that gets done SC's and 4.10's?

 

[drexebo]

Geez I thought some of you guys actually upgraded your stangs? is the only thing that gets done SC's and 4.10's?

yes.