I'm having idling issues with my car. We think it's the Boomba 75 mm TB. It will idle at 1000rpms for 30-40 sec then raise up to 2000rpms then fall then raise then stall. Any idea on why it would do this? The car is fully built ams f1 intake, on speed density, 2150 injectors, 2.4LR plus more don't know what else you would need to know.

Thanks

 

May need to do a throttle body relearn, search up on that for your first step