I have been having this problem all the time on my 09 03 2.0t, and when my transmission tries to downshift from 5th to 4th gear I hear a loud bang which shakes the vehicle. I have tried manually shifting and get the same result. I have adjusted my driving and when accelerating in 5th gear at moderate speeds I accelerate just enough to keep tranny in 5th, so I don't get the shake but this make me thinks..... ..... can this problem made by the revo flash ???