Powerstroke214
Active member
650 is NOT attainable on stock fuel, sorry.
You don't think 650ish is attainable with a stock 15+ CP4 and more air?
I'll concede 650 on the nose might not be an accurate number, but close enough to say 650 with a 10mm is very conservative. I'd be surprised that a healthy 15+ truck, hot tune(like the warhammer which has knocked on 600hp) and say a 64mm(vgt or non) won't be VERY close on that 650 number.