my car has nats, but i want to put on a 1.6 throttle body, i know i cant use the ecu but can i use an adjustable fuel pressure regulator to set up the fueling properly.
No - i got my Apexi setup on the rr, not the tb. It will give you a better through the gears, doubt you'll notice much diffrence on the cg10 tbh, and you'll also need to run a coolent bypass