1vryfststang

What exactly is a PI Swap I seen in my brothers preformance magazine were it was a different intake, but I am still unsure exactly what is benefits and who makes it.....what horsepower can you expect?

boduke0220

PI = performance improvement

Its an intake
heads and cam i think

makes your compression go up to 10:1
and you should expect 260 RWHP and 302 ft lbs of Tq

1vryfststang

I have a 99 G.T I thought the stock specs was 260 and 302?

DRKSIDE_GT

'96-98 4.6s were Non-PI. '99-04 Came stock with the PI heads and intake. So no swap needed for you my man.

1vryfststang

Thnk goodness lol...I knew something was throwing me off. Hey since we are on a discussion would 4.10 gears kill my gas mileage on my car? Also has anyone ran a JLT true cold air intake (the have ram and true cold air) I want the ram but I was just curious about the performance the put out...Thanks everyone

Mustanggt9589

intakes really don't do much most say outragous gains like 10hp or so but you could get any intake and it would be almost the same but i guess every little bit helps. As far as gears I'm sure its just the way you drive your car that determins gas mileage but i could be wrong.