fbu mod

[s15luke]

hey all im new 2 the world of s15 and keep hearing about the fbu mod...

can any one tell me what it is and how it is done?

thanks

 

[Nicely]

Welcome :wave:

Here you go.

I'd recommend the boost valve route if you don't want an electronic controller. Either way, you are going to need to fit a boost gauge too...