nanaki

you're not going to get ~500RWHP without upgrading to dual pumps.

LetThePoniesRunFree

+1

At 461 rwhp, (with 42lb inj., a KB BAP and a SVT pump), my pumpis @ 100% duty cycle at 6100 rpm's and the pressure across the injectors starts to drop off VERY fast. My goal is to make only500 rwhp on 91 octane. In order for me to do that, (in addition to everything else I have done), I'll be purchasing a Cobra fuel tank w/duel pumps and a water/meth inj. kit. The fuel delivery system is an integral, (often over looked), part of making big hp numbers safely and consistently.

If I were to do it over agian,I would get the 2.6. Only because you are limited to 14 psi with the 2.1. I'm about there with mine but, with a 2.6 you're good all the way up to 20 psi.

nanaki

yep. mine was maxed out at 467RWHP, as were my 36lbs injectors and MAF. that's why i tell people 36lbs are more than enough if you don't plan on building the motor.