I totally agree. I know this fuel system from filter forward very well. I have a VAGCOM but it wasn’t operating at Road Atlanta. Fuel filter is pretty new 10k miles. I know it does not make sense. I was brainstorming and I was thinking maybe if the pump basket has too small of an opening and the pickup was on right side. Look I know that is reaching but it is so related to long left G-Forces. Turn 7 has turn 6 rolling right into it so it has about 5 to 7 sec of .6+ G.
It was crazy to make 10 laps and have the car stumble in the same exact place everytime. I would nurse it half throttle and try not to let it downshift and it wouldn’t stumble.
I was so sure the full tank would solve the issue, surprise nope!
PS Its quattro with saddle tanks
Thanks for replying.