So far i have AEM CAI, DC 4-1, and Apexi N1. Do I need a fuel controller now?? I been drivin like this so far does it hurt my performance like am I runnin lean? Is it too much air but can't compress it because lack of fuel?? Or the stock fuel system is still up to it? Cuz I heard with the 3 basic bolt on the next step would be gettin a air/fuel controller or else i'm runnin lean??? I'm goin turbo very soon in 1-2 more days now. So I'm not really in need of a AFC. I'm goin Hondata also. Thanks for the help guyz.

 

1. you don't need a fuel controler with just those boltons, just as long as you reset your ecu you should be fine

2. if you are going turbo yes you will need one, but if you are using hondata then that will do it all, you wont need any other computer( i'm asuming you will go for the stage 3b or 4b for that) good luck

 

No you don't need an air/fuel controller with your mods. It runs rich in stock form and your mods are not enough to make it run lean.

You'll definitely need some form of air/fuel controller when you go turbo.

 

Since we're on the topic, does anyone know what the stock fuel pressure is for a 2001 GS-R?