Car choking after replacing supercharger?
So we started the big work on my car, replacing the supercharger, smaller pulley, full tune-up, changed the thermostat, sparks, wires, PCV valve, O2, cleaning TB, injectors, fuel lines everything....
Exept now we have a problem; when i turn on the car, it roars really nicely, but then after a couple seconds RPM keeps going down and then the car chokes like it was dying, then jumps back up to 2000, then 2 seconds goes back down choking, goes back up, and keeps going like that...
when i give it some gas it stays on and evberything is good, but when i let go after a couple seconds it starts choking again
we just replaced with new fuel filter, we checked and fuel pump is good, regulators seem good, most of the vaccum hoses have been replaced because we had some cracked ones...everything seems to be in order....what could be the problem?