rrfpr, 370cc injectors, and safc?

[95vr6man]

i know alot of people use a rrfpr and stock injectors when doing mild turbo installs but i am curently using 370cc injectors and safc and i want more hp and have access to a 4:1 riseing rate fuel pressure regulator and was wondering if i could install that, turn up the boost with it and tune it with the safc? i know i would out flow my maf at a certain boost level but im not worried about that, i can change mafs, i am just wondering if this would work? thanks!

[smithers584]

what motor, what kind of turbo, what maf? if its the stock turbo then there is no sense in it, just my .02.

[95vr6man]

the motor is a ka24de, turbo is a garrett t3, maf for now is a hacked s14 maf to compensate for the 370cc injectors, i have safc insalled but no adjusments cuz the hacked maf is pretty much perfect. the maf flows 20% more than the stock s14 maf cuz of the hack. i was thinking about getting an adjustable fpr and bump the pressure that way. i just realized JWT has a 4bar fuel pressure tune for 370cc injectors and thats like 59psi instead of the factory 43psi and that would be good to closer to 300hp with 370cc injectors and that sounds mighty good to me lol. has any body tried this on a KA? thanks!

[orion::S14]

Increase base fuel pressure, don't use a RRFPR.

And try not to push it too much further than ~250rwhp or so, which is probably ~10psi from that turbo. At that point you NEED better timing control...fuel is only half of tuning.

I did ~250-255rwhp for ~6 months with a Hacked MAF, higher base fuel pressure, and 9psi from my T3/T04E (57 trim)...running ~16-17* base timing.

Any more will blow a motor.

- Brian

[sunnys14]

orion, how much did u bump your fuel pressure from stock?

[orion::S14]

IIRC, it was 10psi. (~54psi base pressure, no vacuum)

I increased it enough to get a decent A/F at WOT under 8-9psi...using my wideband.

- Brian