I have a 760t. Not too long ago it got the wise idea that it was going to turn right back off after I started it when it is cold.It is no different than turning off the key(im not loosing electric.) I can prevent this by holding the engine at about 1500 rpm for a minute or so. Also more noticeably when the car is warm, it will stall if I abruptly let go of the gas. Sometimes it will recover and sometimes it wont. These problems occured at different times. The stalling warm has happened since I have had the car and the cold start problem has been for 6 months or so. You all are my last hope before I stick a shotgun to the car. BOTH of the fuel pumps are new and working properly. The mass air meter is new and i also cleaned the air control valve. The hose leading from the air box to the turbo is new also. Car is costing to much $$$. Thanks for imput.

P.S. One more thing I forgot to add, the higher the rpm when you turn loose of the gas, the more of a guarentee that it will not recover and stall.