[kdjones2000]

This is the same problem that was happening to me at both AX and HPDE events. For AX I was always setting up to start with 1/2 tank, and couldn't figure out why my car was dying on RH turns.

Only after running 20min sessions in DE events did the cause become clear: During the 3rd 20min DE session the car would start to hesitate and get progressively worse, eventually leading to small backfiring before coming back into power. Fill the car up, and it behaves perfectly fine again.

Since the fuel pickup for the 944 is on the PS of the tank, and there is a significant volume of the tank in the "Upper DS", I don't see an easy fix to stop the fuel from migrating over to the DS during hard right cornering.

The only real fix for this IMO is to go with a bladder.

This all being said, I have asked several 944 owners whether or not they have experienced similar behaviour with their cars, and not one has noticed this.

No one here on Pelican could answer my query on this same issue about a year ago, either.

DGT, it sounds like you have already replaced everything obvious I can think of that might help with the problem.

Here are some off the wall ideas I can think to try:
1) Some racers have set up a "double fuel pump" system for their cars, primarily to make sure that they keep AFR's down on their high power engines. Maybe this could help, by reducing the fuel linear velocity going into the pump.
2) Try increasing the length of the outlet hose going from the tank to the pump. If this is full during the turn, it could help reduce/eliminate cavitation.

Good luck, Keith