Ok, so here's the deal guys. I recently installed my V-AFC, I had the same check engine light like everyone else.
For about 2 weeks, I kept disconnecting the battery in order to have the Check Engine light go away because of the V-AFC.

But here's the problem, recently my car began to stutter, like I'll be driving, and the car will die at low RPMs, I tyr to restart it and the car dies. The car would also stutter when I let go of the gas.
Then my friend began pulling the O2 sensor on the intake, and it went away. So what do you think happened? How can I fix this? An 02 simulator? Maybe I reset the ECU too many times, and it's not used to all this air?

 

Do you have any engine work done to the car? I think you've reset your ecu too many times also. Unless you have work done to the engine, it's really no point in getting a V-AFC.