hey guys I'm planning on doing a quad throttle body setup and was wondering about injectors.do i need to go to bigger injectors,if so will 20v ones fit?plugs etc.and is there any difference between the electrical systems to operate them?(ohms and whatnot).am planning on putting bigger cams in at a later date if that makes a difference.also its for a ae82 fxgt so if will there be any problems i'll encounter?any help would be appreciated.i know the questions may seem silly but people arent really clued up over here

Edited November 6, 201213 yr by ae82gt

20v injectors are side feed and 16v ones are top feed.

 

I think ohmage is different but not sure, can't remember.

 

Anyhow, you will be using a top feed injector as the 20v injectors will not come naturally with the quads installation. The 16v injector is in the head. There are some benefits of placing the injector a little further upstream for high rpm like was done on the 20v, but get them too far from the valve and you will run badly down low. Then you start getting into complicated dual injector territory.

 

The setup you refer to will have a 16v 4age top feed injector in the top of each inlet port. The throttle bodies themselves are remounted on another manifold to adapt it to 16v ports, so you lose those injectors in the 20v manifold. You don't need upstream injection unless you are running over 6500rpm constantly I wouldnt think. So just use the stock 16v injectors.

 

Without boost or any ridiculous engine building, I don't think you could need to upgrade. You will need to clean them however.

What ecu do you intend to run all this with?

Ah i have been told my standard ecu should work.will it?as all that is changing is the way air enters the motor.

well if you are using the standard ecu why not just use the standard injectors and block up the holes where the 20v injectors go in the throttle bodies?

 

I'm not convinced it will work that good, but give it a go, i think some people have had success.

My main concern was will the injector plugs frm the 20v be the same as my ones?