How about high flow cats? because clearly a test pipe is illegal lol even tho i wouldnt mind one myself.

im sticking with the Exedy heavy duty as they are a great well known brand. but are there any possitives to lightened flywheels?
Ok there great because the motor revs up quicker but wouldnt u loose torque. doesnt some if not most torque come from the fast momentum of the flywheel? correct me if im wrong.

and what else can i do to increase top end. Does enyone here have cams in there F20C?