hi old post refresh (sorry) seems i spoke to soon, definitely improved but still reading bewteen -7 to -5 on long fuel trim, still slight holding back when accelerating and now a slightly longer cranking (hot or cold) only thing ive found is that i have two ecu's tape and dive available, on pin 103 of the ecu (ecu ground) the tape grounds through the body of the ecu and the dive doesnt? is this right? eg multimeter with ecu disconnected a lead on pin 103 and a lead on the ecu casing.