My car is pretty moded.. do i need to get a fuel injectors?

I have dp,mp,ic,avcr,pulley... do i need fuel inj?

 

It doesn't really depend on your mods, it depends on how much boost you are trying to run. The more boost you are wanting to run, the more fuel you need to add for the Air/Fuel mixture..

What boost level are you thinking of running?

 

about 13-14 PSi for race.
now im runing like 8-9..

 

Then yep, you'll need to upgrade.

 

which one should i get ? easy to install?

thank you for ur fast reply.

 

I don't know for sure. I see a lot of people upgrading their secondaries to 1300.

You'll also want to upgrade your fuel pump as well. I'm sure if you did a search for "injector size", I'm sure you'll find some answers (unless someone else pops in here to answer you in more detail).

 

I hope you have an ecu. I would get one of those first. Then run 1300 secondaries, upgraded Supra TT pump, and a FPR.
That would cover it.

 

I already got fuel pump.. from rx7.com

Thanks

 

easy to install right? replacing stock ones??

 

Fuel pump is the second easiest upgrade after short shifter (takes 5 minutes). Fuel pump takes about 30 minutes. Just don't smoke while doing it and you should be ok.

thesaint

 

To change injectors, you will need a programmable ECU like the Power FC, haltech, AEM, etc. You really should have one anyway with your mods.

 

Even i get S-AFC?
anyone wants to buy my XS Ecu for $400?

 

Do i need after market fuelrail for bigger injectors?
or u just insALL THIS new inj in to where stock one used to be

 

KD Rotary sells RC Engineering bored out stock secondaries (1200/1300cc) for ~$330/pair with your stockers as a core deposit. They drop right in, but you need an aftermarket ECU (haltech/power fc/etc) to run them. Of course, dave installed mine, so I have no idea how difficult it was....I've heard the secondaries are a pita to get to.

Check the Rx7store for injectors as well....can't remember offhand, but he might sell them.

Btw, I would keep the boost at its current 8psi until upgrading engine management and injectors.

 

u don't think XS ECU isn't good enough for my mods?

i was so dumb about getting that ecu..

 

There are injector computers you can buy but they are expensive and you can do the same thing with a PFC/Haltech/or AEM plus tune everything else on the car. The remapped stock computers can't control upgraded secondaries. 1200/1300cc should be ok for your mods and yes, I've heard they are a PITA to get to.