Replacement second hand throttle body?

nomodsjk

Google "throttle body relearn procedure 370z " and follow the idle air relearn and throttle pedal release procedures first then the relearn for the throttle bodies. It seems difficult when you're reading it but its really not that bad. It may take a few tries but you'll get it. You'll know for sure if its worked by the way your car will idle afterwards. Should be a very consistent idle around 800-900rpms (depending on mods and tuning) good luck brother. Also cleaning them front and back would help. That carbon build up doesn't take long to make the butterflies get sticky and out of sync