RB25 Tune/Gas Mileage

[Darth & Vader]

Hey whats up guys, been searching other forums and google for black and white answer but can't seem to find one. I'm pretty sure im getting horrible gas mileage on my rb25. I try and not beat on the gas pedal and usually just cruise wherever I'm headed but I'm only seeing 200 Miles on the odometer after a full tank of gas; Mind you my work is honestly about 5-8 minutes away from home so i don't really drive too far haha.

My setup:

Rebuilt series 1 RB25
Stock internals
Stock turbo @ 11psi
Stock Injectors
Stock MAF
HKS Bov (not recirculated)
Greddy Intake Manifold
Walboro 255lph fuel pump
Aeromotive FPR @ 45psi ~ Is this fine for 11psi?
Z32 Fuel filter
FMIC
Stock ECU



I don't plan on upgrading the engine any more this is exactly how i want it. With that being said, what would be the best way for me to get a tune with my setup, considering it's pretty much stock? Is there any way possible to get a tune on the stock ECU; What I'm really trying to accomplish with this is some better gas mileage as well as performance increase, not necessarily in hp increase.

If you've got some helpful information please post it up!

[herbieS13]

prolly get away with a piggy back

[Darth & Vader]

prolly get away with a piggy back

Hrmmm....I will only go this route if i absolutely have to, but you never know, I may have to on a stock ECU.

I'm trying to see if anyone has any information on tuning the stock ECU.

[Sileighty_85]

Ive heard its pretty hard to tune the Stock ECU due to the processor.

It can be done but usually you only see Mines Tuned or some other old school Japanese tuners

Other routes are the RB20 ECU (but you loose NVCS, and need to rewire a few pins on the ECU plug)

Other is the Z32TT (requires repining the ECU plug as well)

the Repining is like 8 wires or somthing