Just wind the allen screw down on the pressure regulator inside the throttle body.
Wouldn't bother doing it unless you're running serious power as you might just end up confuddling the ecu if it can't wind the injector duration back enough for idle speed..
Wouldn't bother doing it unless you're running serious power as you might just end up confuddling the ecu if it can't wind the injector duration back enough for idle speed..