Thread: SR20 injector Size?

thats why i asked...problem right??? anyways i guess i need to put the stock size injectors then right? thx for your help guys..

This thread is full of fail, Vadim is correct on stock injector size and his recomdenation. People who have no idea shouldn't recommend anything.

lol ..... So the stock injectors 259cc are the recommended..right?

For an all motor setup your good with the 259cc..... If your planning on boostin you will need to up injector sizes

yes you are good with stock injectors

The guy who recomended the GTi-R injectors is either being sarcastic or is just and idiot

thanks man for info.. so now next question is there a brand of injectors that are sort say top shelf..lol. i dont want some bunk injectors...

Man but why do you want to change injectors on a stock motor with bolt ons?
If you change injector size you will have to at least add a piggyback to the stock ECU or use a nistune or Calum, or go standalone.
But the stock ECU will not be able to handle by herself bigger injectors, and you do not need them

Unless you want to get a new ECU, keep 259cc injectors. If you want better performing ones, get brand new ones or send yours out to be cleaned and flow tested.

Everything else is a waste of money that wont gain you any hp. More fuel does not equal more power, you need cfm (air) with more air to make more power.

Vadim is right. With a N/A motor, the engine is literally sucking air in as fast as it can. This is limited by many things like: MAF sensor, throttle body, intake manifold, runner size, cam lift, etc.. Even with bolt-on parts, your going to have change A LOT for the engine to be capable of sucking in the amount of air that will justify the need for larger injectors.

Turbocharging forces air into the cylinder. More air than the engine would be capable of drawing in on it's own. And all that air needs fuel. So that's why the need for larger injectors is more important with a turbo car, and not so much with N/A.

For you to draw in the ammount of air that will require larger injectors, your looking at things like: opening up the intake runners or a larger manifold, porting and polishing, larger throttle body, some pretty healthy camshafts, valve grinding and polishing, velocity stacks, overboring the cylinders for larger pistons, longer stroke rods or crank, and more stuff I'm sure I'm forgetting.

do injectors go bad or out?