As posted to the UUC board; I understand that this is a common problem; At track events my E30, M3 is starving for fuel on hard right hand sweepers. I've changed the in tank fuel pump 2 weeks ago but at my 1st track event since the change I discover that the problem still exists. It started happening at ½ empty, and now its starting to do this at 2/3 full. It's odd that it may do this on one of our sessions (toward the end of a 20 minute session) but not do it at all the next session. My next step is to change the fuel filter under and behind the drivers seat along with the regulator thats just in front of it, hoping that this may make a difference. Has anyone out there had this problem and found a cure? I posted this to the UUC group also. So far some good pointers, however whats been suggested has not cured this. Thanks Eddy