Ok so I have a question. I am trying to figure out what size pulley I can drop down to on stock L67 injectors. The fuel pump is upgraded and has the re wire as well. Also what size pulley would b safe with no intercooler? I have a cold air intake, headers, high flow cat, electronic cut out right after cat, cam, upgraded springs and rollers. Right now I am running a 3.3 with no problems. Just dont want to drop down if the fuel system or anything wouldnt be able to handle it.

 

Proper dyno shops and such should be able to find out how much fuel you are pushing and whether you are close to maxing your injectors

How are you tuning?

 

I dont remember what it read when it was dyno tuned awhile ago. i know at that time my fuel was maxed out which is why i upgraded the fuel pump and wires. but havnt dynoed it since then. Use HP Tunning

 

In HPTuners look for the IDC% (injector duty cycle)

If you are at 90% or above, you are really close to maxing out the injectors and should move up.

 

Ok cool thanks. Thats good to know.

 

Also if I do upgrade the injectors do I need to upgrade the fuel rail as well?

 

You shouldn't have to do the rail, just have to retune the car for the different injectors

 

Ok sounds good. I might just do both since I'll be right there. Depends on cost. Does changing the fuel rail actually do anything or is it just for looks?

 

Pretty sure it's just for the look, but there could be benefits that I don't know.

 

Ok so for the injectors I am going to order them from ZZP but idk which connector they use. any idea? The picture below shows the different styles you have to pick from.