most power you've made on stock s15 maf/injectors?

[wutangben]

stupid question, but I'm curious to know what the limits really are on stock maf/injectors.

I was always under the impression that that stuff maxed out around 250/260whp. Maybe a little higher for S15 motors? is 300whp possible?

thanks

[carcrazee]

over the years from what ive gathered for an SR, to reach 300hp, youl need 550cc injectors, t28 (15~18psi), Z-maf and a tune of some sort. ive heard of people using the stock s15 injectors(440cc) and reaching about 280hp but ive never seen a dyno sheet.

[wutangben]

I'm looking at a dynojet graph showing 292hp/232tq @12psi from an S15 SR with stock injectors, stock FPR, stock maf, but has a 3071 and cams. just didn't think that was possible, but getting conflicting opinions from legit sources. I assume you can tune beyond the MAFs resolution, but how do you get past the injector limitations?

[gaz_moose]

why would you have a stock MAF and injectors on a 3071 and cams?? just sounds stupid, bet it was bottom mount .64 rear also. proper idiot spec.

I had a bone stock s14 sr20 (so s14 FPR) with a gt2560r (or whatever a rollerbearing t28 actually is) s15 injectors and a z32 MAF and made a supposed 320 hp at the flywheel on nistune ECU. oh I had tubular mainifold etc.. and intercooler etc.. that would have been on a dyno jet or dynodynamics rolling road.

but assuming your engine is decent etc.. I would say stock s14 stuff with 15psi would get you 250hp/280hp. s15 injectors etc.. would net you more, so 300hp at a push. depends on the guy doing the mapping, if he is rinsing every last drop out of it or wants a conservative tune.

[carcrazee]

why would you have a stock MAF and injectors on a 3071 and cams?? just sounds stupid, bet it was bottom mount .64 rear also. proper idiot spec.


I said the same thing to myself lol

[LoSt180]

In for answers on the limits of the S15 440cc injectors.