Saleen Series II HP?
 

I just bought a Saleen series II supercharger with 70MM Throttle Body, Saleen Series IV Intake Plenum Elbow, Chicane upgraded pulley (8 Pounds boost), Ford Racing 42 lb. Fuel Injectors, and a Ford Racing Lightning 90MM mass air flow meter. What kind of HP/Tq number should I expect?

What year, style mustang do you have? That would help.

Its an 02 GT 5 speed with stock gears, off-road prochamber and a mac cat-back.

Someone else would probably give you a better idea than me but i'd guess around 375rwhp.

I'd say 350-360 but there is no real way to tell without strapping it up onto a dyno.

that would be sweet...but i have heard of these not topping 315 rwhp?

Stock Saleens (s/ced) are rated at 365bhp. So a little above 300rwhp. With the pulley, i'd guess around 350-375rwhp for yours.



P.S: 2,000 posts, woo hoo!

Im hoping that the pully and the series IV inlet help out on the power. If I'm above 350 I will be happy. Ive also read that the saleen tune is crap and a dyno tune with a predator or sct will give huge gains.

the compressor is kinda small.. 330-340rwhp at 8lbs

How many lbs can I run before it becomes inefficient?

it's already inefficient at 8lbs compared to better blowers. I'd stop messing with it after about 12lbs of intercooled boost and look for something more efficient like a twin screw.