wassup guyz..
Quick question.. i have a GSR motor in my EK9.. headers,. intake.. exhaust.. hi-flow cat n res.. that's it. I had a friend install a Ported Intake Manifold i'm not sure if it's a gsr or itr.. but the car revs up and down from 800 to 2000 constantly.. there is no vaccuum leaks.. we used a scan tool.. guarantee there is no sensor problems.. no check engine light is on. what could be the problem.. should i or do i NEED to replace my throttlebody? i replaced the iacv and it's not that.. the car is driveable but not that graet with the idling.. please help.. thanks!