I was wondering if anybody knew what the stock fuel injector size are for the Evo X. I work for a dealership and my own shop couldn't tell me or find out. Not even the car medic had it. I am looking into upgrading my fuel injectors and fuel pump if anybody makes them. Does any one know who does? I used the RC Injectors Sizing chart and according to that I need 900 cc injectors. does that sound like too much to anybody? I am Trying to accomplish 325 to the wheels or 445 ish to the crank. I found out that stock fuel rail preasure for the Evo X is 38 PSI, my B.S.F.C is .60, and my injector duty cycle is 80% max.

 

You should easly hit 325 on stock injector and fuel pump. People are getting about 380 awhp on stock fuel system. But i think the injectors are 660cc (just what i hear).

I am upgrading my fuel pump and my injectors because ill be over 400awhp on a MD.

 

You definately won't need 900cc injectors to make 325whp...there are lots of members making that power on stock injectors and stock fuel pump. I believe stock is somewhere between 550-600cc. I know there are a few members running full stock fuel setups making over 360whp.

What mods are you planning on doing to achieve this power level?

 

To meet your stated power goals you'll be more than ok with your stock set-up as it sits now ! We're now well over 400hp and still on the stock fuel pump and injectors . Now its just a matter of getting the correct parts to meet your goals and make the best out of those stock parts . And yes the stock injector are rated at about 660cc ..

 

I've heard 540cc.
IDCs are pretty high on a full exhaust + tuned stock turbo car.