Hi Neil, Pretty sure that the pump and ECU are matched on these and as far as I am aware, it is only the dealer tool that can configure these. Is there a large relay fitted to the o/s/f inner wing? If so check the wiring and/or operation of this relay! I have had dealings with a 106 with the 1500D fitted but not Saxo (although I suspect they are totally the same). HTH mate, Gunner.