oppa637

iTrader: (6)

I tried to search but couldn't really find it. I'm changing my fuel pump to a supra pump but have the stock injectors. I have a pfc, emissions deleted, straight exhaust,arc intake and few other mods but want to know, will the increase fuel pressure screw anything up? Will I run rich or will it be ok? I didn't know if I'm suppose to do anything or just throw it in

npena80

youll be running richer... idk if thats an issue to you

ShiftRX7

with proper tuning you can run the afr you want; i have run it for a year or so with stock injectors prior to moving to larger ones and no issues at all

oppa637

iTrader: (6)

K, so it should just make it a bit richer but that'll just be more cushion for boost leak? Guess I should just get my car tuned? =P

MR_Rick

iTrader: (7)

More cushion for boost leak? You mean more cushion for boost spike/creep.

1QWIK7

iTrader: (33)

lol no wonder when my wastegate hose popped off and i was spiking all over the place my engine was fine lol.

Thank god for supra pump.

And yes i think it does make you run richer. Upon cold startup i have to properly warm up the car otherwise it will buck and act funny if i try to drive it as soon as i start it. I Think thats because of it running rich.

IRPerformance

iTrader: (41)

Your fuel pressure will still be limited by the stock regulator, but it would be a good idea to adjust the tune.

oppa637

iTrader: (6)

Alright. Thanks guys! Would it be better just to get an aftermarket fuel pressure regulator?

IRPerformance

iTrader: (41)

No, not unless you are going with aftermarket secondary injectors and fuel rail. Have the tune checked and adjusted if necessary.

moosejaw

iTrader: (6)

Is this a brand new Supra Pump you are using?

oppa637

iTrader: (6)

Yea, I'm going with a brand new one. If i'm going to go ahead and get a tune, should i get 1300cc secondarys first and get it over with?