I'm looking into getting some larger peak and hold injectors for my b16a, Its already has some dsm 450cc's installed in it.
I'm looking at 750cc RC injectors and at the 680cc precisions.
The only thing is i heard that RC injectors sometimes have fitment issues?
I'm going to be pushing between 10-15lbs of boost on my setup off a 57trim.

What would you guys recommend I get?

 

fic, go saturated, 1000cc injectors here idle like stock. no need for a resistor box either.

 

Since you have the resistor box in already, no need to remove it. I'd personally use a Precision Injector at about 880cc or so, and call it a day. You would have to retune the car to account for the new duty cycle and time delay for the injectors.

 

thats true ^^

I have never heard of RC's with fitment issues though.

 

while I was searching earlier, I read that If you go over 800cc's while using a resistor box The idle will become really choppy and you wont see the true potential of the injector unless you run injector drivers.. Is that true? or does somebody just not know what they're talking about?

 

Yep I have 880cc injectors from Precision and love them! Stock idle here!

 

I'm doing just fine in my crx with my Precision 880's, they idle like stock! Nothing more than my resistor box!

 

alright sweet, is there either a vendor or a website that you would recommend to get them from?

 

^ disregard last question. I found a local shop nearby that sells them. So should i just go with 880cc's or would it be better to go with 780ccs? would their be any difference in tuneability, or how good they idle?

 

880cc is fine and easier to replace. no difference in 10cc of "tuning".

 

Alright so i got the injectors, and the bottom of them fit fine into the intake manifold.. but the o-rings on the top wont fit and are alot larger than stock. I could probably force them in but that seems like a bad idea. Ive tried lubing them up and they still get pinched when i apply force to them. What should i do??

 

You need to post a picture of your fuel rail... And is your fuel rail OEM or aftermarket? And if OEM, is it Gen 1 or Gen 2?

Mine fit just fine with my gen 1 b16 fuel rail, but I do remember them being nice a snug!

 

its an aftermarket one, think its AEM but not sure. Ill post a pic in a few.

 

The dsm injectors i had inbefore slipped right in with a little force. These ones on the other hand have huge o rings on them.

 

get some oem honda fuel rail o-rings. they arent as fat as the one that come with precision and rc.

honda part# 91301-P2F-A01

 

Those are the honda ones from Precision, correct? they use a smaller hat and o-ring

 

I remember my o-rings being black and not green... I wonder if they changed there supplier with will cause obviously fitment issues! Yeah try the stock OEM o-rings...

 

Yes they are the Honda peak and holds from precision. But the o-rings pinch when you try and push them into the rail. They fit fine in the manifold.
So i should just go and buy the oem honda o-rings?
Im just afraid if i push on the rings too hard they might get nicks or splits..

 

Try the oem o-rings

 

Alright im gonna give them a shot, I gotta go to the dealership to get manifold studs anyways so ill order some o-rings while im at it.