rex u.k

I'm still a bit dubious about my fuel set up.Let me know what you think.Thanks.
Supra tt pump with wiring mod.(Jason told me the pump will support 500BHP, i bought it from him but i'm not 100% convinced) i was refering to WHP maybe he wasn't,anyway with the mod tests have shown it can push out around 290LPH.
This is sufficient for my injectors at full duty but not really any bigger.
Injectors are 1600 sec. stock prim.
-8 fuel in -6 return sx FPR.
Engine is streetport running t78 and PFC.
Will i be ok up to 17psi boost? i won't be going any more for a while.(little)
Wastegate is HKS racing gate and apexi avcr controller.
Do i have enough safety margin or should i go up on prim. injectors and pump?
If i'm ok at this level boost then what boost level will require upgrades?

sevenin7

Try to use and one external Bosch 0.44 with the supra fuel pump . I think its more safe like this !

rex u.k

anyone? £
£

Rpeck

do you have anyway to log your injector duty cycle, or A/F ratio? If not, 17 PSI sounds very dangerous, if so .. then go for it and see what happens. Just keep an eye on the numbers. I would think the fuel pump is okay, but I really know nothing about supra pumps.

carx7

iTrader: (31)

I'm running 720 prim, 1600 secondary with -6AN feed return. I have the rx7.com replacement pump... which I think may be the supra pump. How many ND replacements are there really??

I did 470RWHP at 19psi with a 10.8 AFR and that seemed to be the max of the pump... we quit boost higher than that until I add another pump. My injectors were *peaking* 90% duty, but it was for a *very* short while and Steve Kan (who did the tunning) said it was nothing to worry about.

rex u.k

Thanks alot guys, I'm still waiting on the wideband techedge2.0 to come through,and the datalogit from RP.
So i'm just trying to see what others have seen with similar set ups for now.

racer1

It's better as sevenin7 said to add an external pump as well. You may not need it but it's an extra safety. I don;t think that supra pump can satisfy those numbers.

rex u.k

Sorry, i should have made it clear in the original post, i'm looking for response from those who are running the same or very similar set ups, like carx7 posted (thanks).
Something with foundation,real numbers,etc.
Otherwise we end up with alot of:"I thinks" or, "i don't thinks" or "i do believes",etc, etc.

Jason

iTrader: (5)

It wont support 500 RWHP.
If you are running 17lbs of boost you are looking at maybe 450 which will be fine. Best thing to do it get a fuel pressure gauge and mount it in the car.

Jason