R33 Rb 25 Det Turbo Upgrade ?

[Rolls]

so dynos, timing, exhaust restrictions, turbo setups etc all play no part whatsoever?

of course hence you'd probably see ranges from 200-240kw but 185 is very very low, was it running massive boost with a small turbo and 10:1 afrs or something?

[JonnoHR31]

standard turbo, 12psi, 12:1 afr

[Toshi]

standard turbo, 12psi, 12:1 afr

I think its AFM problem.

[JonnoHR31]

how do you figure that?

[Toshi]

how do you figure that?

If AFM volt is low , AFR will lean.

Did you check power on fuel pump connector?

Normally 12V come to fuel pump connector at around 1500rpm

If power is only 10v its fuel pump relay (in boot) problem.(please do not check at idle)

If 12v come to connector I think AFM problem.

[JonnoHR31]

and if afm volt normal, afr normal. comprende?

[Birds]

That's still too low to be maxing injector duty cycles. It doesn't matter which way you look at it, unless you are running incredibly rich (which would explain the power down), there is no way you are near maximum duty cycle on 185. Have you had your injectors flow tested?

[JonnoHR31]

yes i know its low, was crazy rich. didnt flow test the injectors, got bigger ones now anyway.

pretty sure it was just a combination of a restrictive exhaust, way too conservative tune (timing wise) and a low reading dyno

but it has to be the afm....