I'm looking to solve the fuel starvation issue in my E30. The engine starts to cut out in right handers but runs flawlessly on straights and left handers. I started to experience this after about 3 laps into my race session even though I started off with a full tank. I have an 89 E30 which utilizes the stock fuel tank with a single in-tank fuel pump. I have just replaced the fuel pump, but have not track tested it yet. Any other suggestions??? Also what is the sending unit looking thingy mounted in the tank on the drivers side, I was under the impression that the fuel level sending unit was the unit mounted through the fuel pump,whats the second one for, can someone clarify?? Thanks for your help.