[SixCyl]

Ok, I got all that information and it's what I had been told about tunes, that partial throttle may have some learning but not at WOT. More out of idle curiosity can someone explain to me why after flashing my car to tuned or stock it makes a loud grumble under partial throttle but no real movement upon driving it the first time. This only happens in that period of time where the engine is still running a higher RPM to heat up, and it only happens the first time after a flash. I hope I said that well.