Quote Originally Posted by MSRTom
I have to agree with FAHHQUE on that one, jtown. I just installed a procharger on one of my customer's cars. He's got an H-pipe and Magnaflow catback. Had pulleys and a cold air, but those had to go for the Procharger install. I installed a Focus pump and an AFM powerpipe at the same time.

Put his car on the rollers on Tuesday and he spun em to the tune of 420rwhp before tuning. This is the P-1SC H.O. kit (8-10 psi) not the P-1SC Stage II or the D-1SC. The tuner is tuning his car with Diablo, so he hopes to hit 440 after tuning.

He still needs a lot to get to 500. Cams, Headers, plenum and tb, etc. He'll probably need to pulley it and upgrade the intercooler or even just upgrade to the D1SC setup to see the boost needed for 500rwhp.
I believe she was running 12 psi, but let me see if I can find her car somewhere on on the mustang forums. She used to post up all the time. And i know she still has it, she lives out in Snellville off 124. Maybe I can get what she actually has done to it. But i know she was above 550 horses with it.