Re: Sprint booster gone bad?
My sb never affected the shift, just the onset of the throttle was significantly faster, BUT NOT NEAR ENOUGH; TOADY THROTTLE RESPONSE, BETTER BUT TOADY STILL.
I have ordered an improved version that I will be testing asap so I can see if it helps on the track where it is critical to have. Our cars are so doggy, flat foot the throttle in neutral and watch the revs doddle up to 4000, aargue!
You can verify that your sb is an issue by bypassing it and seeing if the issue is still there without it in the car.
Woody