1TxRx7

iTrader: (16)

I just bought a 1994 R2 and am having it shipped down n a week or so and have a question . Its a Bridgeport 13,super g Intercooler, Turbo-xs T??04 snail,Apexi BOV stage 2,J&S engineering Knock cpu with sensor and guage, Greddy elbo w/ hard hoses, Apexi wastegate /downpipe, Racing beat type 2 full Exhaust, Apexi A/F controller,Greddy/trust boost controller/Blitz boost gauge. Apexi power FC ecu w/ datalogit stage 2 clutch. What is the injector and fuel set up I should go with 850 prims ????seconds and what fuel pump if I even need one.. Also does anyone know a good shop to program ECU In Houston? Cars coming from Utah, big change in elevation. Trying to have the car ready for next months meet. Funds are a major issue, I damn near broke after buying and shipping car. seller said pulls like a beast but feels starved for fuel once high rpms hit. I dont want to blow motor,and want to spend little money now. Saving for 20b swap.Sorry for the mod list but dont know whats needed for fuel advice. I owned 3 1st Gens. but am lost with boosting. Not racing it just looking for the max hp with whats on the car now?? Thanks guys n Advance..

1TxRx7

iTrader: (16)

I just bought a 1994 R2 and am having it shipped down n a week or so and have a question . Its a Bridgeport 13,super g Intercooler, Turbo-xs T??04 snail,Apexi BOV stage 2,J&S engineering Knock cpu with sensor and guage, Greddy elbo w/ hard hoses, Apexi wastegate /downpipe, Racing beat type 2 full Exhaust, Apexi A/F controller,Greddy/trust boost controller/Blitz boost gauge. Apexi power FC ecu w/ datalogit stage 2 clutch. What is the injector and fuel set up I should go with 850 prims ????seconds and what fuel pump if I even need one.. Also does anyone know a good shop to program ECU In Houston? Cars coming from Utah, big change in elevation. Trying to have the car ready for next months meet. Funds are a major issue, I damn near broke after buying and shipping car. seller said pulls like a beast but feels starved for fuel once high rpms hit. I dont want to blow motor,and want to spend little money now. Saving for 20b swap.Sorry for the mod list but dont know whats needed for fuel advice. I owned 3 1st Gens. but am lost with boosting. Not racing it just looking for the max hp with whats on the car now?? Thanks guys n Advance..

Dudemaaanownsanrx7

iTrader: (23)

Unless I missed it I didn't see any mention of what injectors and fuel pump it's running now. The amount of fuel you need will depend on how much boost you're running and also the size of the turbo. t04 is very broad as the size can go from very small to the large side of medium. XS as in XS power? That's the ebay brand and could be about anything, best thing will be to take a pic of the turbo to get an idea. Those turbo's don't last either, the oil seals are very likely to fail. You should get it rebuilt with garret parts.

For a street single turbo in the 400 hp area, 550/1680 injectors is what I recommend. Though you could probably get by with 550/1300. If you're running the stock pump it should be upgraded too.

Although I will say this, I was curious how far the stock pump would go before running out of fuel, and once it was rewired it supplied enough fuel for 400+ hp without the pressure dropping off. I have a FP gauge mounted in the car. It was ran with a masterpower t70 up to 16 psi, afr's as rich as high tens before i tuned it out to 11's. I'm now running dual stock pumps so I can run more boost, and more fuel pressure. Even though the pressure was holding at 16 psi I just don't trust it at the higher pressures. Maybe my pump was something special cause I haven't heard of anyone else getting that much out of the stock pump, and I don't recommend it unless you can watch the pressure.

Look into getting a wideband put on the car if it doesn't already have one also.

If you're running the stock injectors they will run out of fuel between 8-10 psi on a medium sized turbo with a ported engine. Do not drive the car hard if its running out of fuel. A tubo rotary that is "starved for fuel" = a dead rotary.

You can also get more fuel out of smaller injectors by raising the fuel pressure. the formula to calculate new flow with increased pressure is square Route(new pressure / old pressure) x old flow. Most injectors are rated at 40 psi.

So take the stock 550cc's as an example, and raise the fuel pressure to 60psi.

SQRT(60/40)X 550= 674cc

now take the stock 850cc's:

SQRT(60/40)x 850=1041cc

Combine all injectors together and that's a total increase of 630cc
Just make sure the pump can flow enough at the higher pressures.

1TxRx7

iTrader: (16)

Finally something to go on, I'll take pics and post. Sounds like Ive got some fuel work ahead of me. Thanks for the help, and I keep updates posted. Dont need a blown anything. Thanks for the info. I think fuel setup is all stock .Is there a full fuel system kit, that wont put me in the poor house???? YET!!!!