the honda is dead simple in wiring, the problem with the hunting rpm is that the CNG waalay adjust rpms from the throttle stop screw, that screw should never be disturbed or you would need to calibrate the throttle position sensor to the throttle body, the idle is supposed to be adjusted from the idle speed screw - which sits on top of the throttle body, usually requires a flexible screwdriver to adjust - which many mechanics dont have thats why they tamper the throttle stop. IDIOTS class A++++
e.g. Ive seen CNG mechanics remove a throttle body from a Geely (chinese stupid car) - to remove that you need to remove the studs holding it OR the brake master cylinder. They removed the stud and then instead of using threadlock on the studs - mixed water with salt and put that on the stud - saying it will soon corrode and hold it tight, I was like W T F - you are relying on corrosion as threadlock. what IQ or mentality was that