It really does sound like a fuel pump issue. The only thing I can possibly think of that would cause a car to stall in a turn is that the fuel level in the tank shifts and the pump can't handle it.
Electrical? I don't think electrons would care about the changing momentum of the vehicle.
Previous Owner Mods: 4-1 long headers, MBRP Exhaust, Short Ram Intake, Strut Bar, Neon Lighting
ME: Bosch IR Fusion plugs, Back Cat, Kazera KZ-V Rims & Pirelli 215/45ZR17ís
(Next Project: add Throttle Body)