yeah ive only got that pump on so i no the engine wont blow up,as its not long cost me 4k rebuilding it so i thought it would be best,especially if im taking it round in oultan park in a few wks.i didnt realise tho that the reg could be to blame, sort of makes sense when you think about it,i just thought that the ecu was the only thing that controlled the fuel last before hitting the injectors.... im going try that later, cheers nick