Ok so. When i start the car it idles just fine, when i tap the gas it revs up like any other 7mgte, but when i let off it dies without even trying to save itself. if i do not touch the gas it will keep idling but rpms will slowly drop . when/if i drive the car however it will let me go through the gears with the afr at 14.0-17.0 but sometimes it will sputter and act like its trying to die, when it does that my afr drops to 10.0. earlier today it was driving just fine, i went and drifted it for a bit and after is when i had my problems, i checked for a vacuum leak but i dont think thats it due to it will still run perfectly fine until i let it sit or i give it gas. any thoughts would be great.