He didn't say stock pump he said stock Fuel pressure.

And actually according to my calculations 440cc injectors on stock pressure (~45 psi) should be able to support 265 crank running the standard AFR for FI. I could be wrong though. tongue.gif

[ December 17, 2002, 12:49 PM: Message edited by: Y2KTIBLTD ]

 

Red... are you sure about the emanage's limits? It plugs into the wiring harness after the ecm i.e. on the way to the injectors according to its wiring diagram.

 

Keep in mind, it can only send "so short" of a signal to the injector. Sure the injector may only pulse .5 ms, but it can't pulse 0.05ms...so there is a "limit" of how short, and how long you can pulse an injector. the "low" end is set by the type/brand of injector you buy. The "long" end is limited by the length the intake valves are open at top RPM.

 

If your getting a larger high pressure fuel pump(which you will need) make sure you also get an AEM 1:1 FPR which will allow you your stock fuel pressure to say at 44-45psi.The Orfice would have to be changed to the largest one inside the regulator which comes with the AEM kit.You would then have to fabricate a Block off plate to where your stock FPR is located.
Try to see if Alpine can sell it seperately and would be less hassles for you instead of fabricating a block off plate.

 

so i can run my 200+-whp on a stock pump with bigger injectors?

whats the range of HP for a s-afc setup?

 

Decker i would get a bigger Fuel pump just be on the safe side.Keep in mind that your stock Fuel pump MIGHT be able to handle near the 200WHP MARK but you are maxing it out and defently putting a strain on that pump.It will go on you very quickly becuase you are working to the max.For an Extra $100-$120 just get the Walboro 2551ph Fuel pump to be on the safe side smile.gif smile.gif

 

My stock fuel pump went out on me with a 75 shot...It took awhile tho...

-jordan

[ December 18, 2002, 08:17 AM: Message edited by: xxTIBxx ]

 

I wouldn't trust the stock pump to more than about 170-180 wheel horsepower. Anything larger, just go buy a used (but good condition) 2nd gen Eclipse GSX/GST fuel pump and swap it in -- it's a direct replacement for our stocker.

Onpol was able to pick up 237 wheel horsepower with 440cc injectors, a used 2nd gen RX7 Turbo II fuel pump, an MSD DIS2/BTM, custom manifolding, external wastegate and a small T3 turbo between 10 and 12 psi.

 

hmm...237? sweet, do you know what type of intercooler he was using?

 

I was looking at the SMT-5 program and there is an area under options that allows a "Fuel zero calibration", Voltage upper and lower limits(0-9.99V) and frequency control(2 KHz to 9.99 KHz). Since I don't have an SMT-5 yet, I can't test what these would do, but I would think that the first would allow you to adjust for larger or smaller injectors, no? Anyone who has one, could you shed a little light on this?