7A-FTE need info on INJECTORS, well........ Options

[doGGy]

Well as long as i read about the injectors stuff, i know that i will need bigger injectors (or can i run stock ones at 10 psi?). Well i got Supras 7M-GE injectors (yellow top... ). And i know what 7A injectors are 13.9 ohm and 7M-GE are 2.9 ohm. Well i will need resistor pack to run them, right? but is this resistor pack is just ordinary resistors or there are more stuff that i dont know about? And is there a change to run resistors straight on the injector to get needed resistance for the ecu?

Another Q is i got Supras 2 bar MAP. But i dont know ANYONE who used it sucesfully. How the hell i will tune my car with 2 bar MAP?

Well for now thats it

Thanks for the replays...

[toyotaspeed_90]

you can run the greentop 4a-ge (smallport highcomp) injectors.... they're 250CC and high ohm......

[KnightRider]

you can also use turbo probe injectors. i have two sets if you need some.

[doGGy]

Well, i asked one thing, got answers that i know already..... But thanks anyway...

KnightRider - how much for the injectors?

[doGGy]

ANYONE????? Guys come one, or should i go to C.net to get the info???

[SpedToe169]

I think even with a resistor pack you're going to have power issues using the wrong impedance injectors. Just get the right ones!! It'll make your life a lot easier.

Do you know what size the stock injectors are?

[hyp3rk1d]

cant you run the stock injectors.. they should hold up, shouldnt they??

[rlan214]

[hyp3rk1d]

u can runnin on 8psi?? correct???

[rlan214]

[1bwilson]

Doggy, the supra MAP is 2.2 bar you need a 3sgte one....There is no way around this. Not even the 5sfTe can run right with the 2.2.

[hyp3rk1d]

hmm.. ne 1 know ne knowledge of running 8 psi on your stock injectors.. i thought the only thing you needed to change was the fuel pump??

[1bwilson]

I think you will max out the flow way before that. Dont know for sure though.

[doGGy]

Well, then i will have to get the Right injectors for sure... And that MAP sensore is total **** to? Hell.... well, how much does 3S-GTE map costs?

Adn our injectors stock are i think 215 cc or maybe bit more....

[toyotaspeed_90]

7/4a-fe stock injectors (at least in corolla's... i can't see them being different from an ae101/102 seeing how they use the same motor, ecu, and trannies) are 175cc......

[hyp3rk1d]

so does ne1 know for sure if they would withstand 8psi?

[SpedToe169]

It totally depends on what fuel pressure you had to run to make them work at that boost level. The amount of fuel the injector delivers is dependent on the flow rate of the injector (what you're talking about here), the fuel pressure delivered to it (controlled by your FMU), and the pulsewidth (controlled by the computer). You can add more fuel by increasing the fuel pressure but past about 100psi the injectors will start to hang open and cause problems. Also, if you reach about 95% duty cycle (by altering the pulsewidth with the SAFC) you'll start to have problems.

The easy answer is, if you don't know exactly what you're doing, error on the side of the bigger injectors. Its probably possible to make the car work with the stock ones, but an error could be fatal to the motor.

[1bwilson]