2008 g37s 6mt. hesitates after a decent acceleration (anything after 4k) in the mid rpms (2000-3000). It keeps hesitating until i drive it easy then it accelerates fine for the first time then it starts the hesitation all over again. The car has a K&n typhoon intake, ark grip exhaust and gtm test pipes. It is uprev tuned. No cel lights.

When I bought the car it Already had the intakes on it. It did hesitate but I figured maybe because there was no tune, but now it is tuned and there is no difference. Any help would be appreciated.