hi all just wonderd if any 1 had any ideas a friend of mine has put a 2.3 16v out a granada in to his sierra running a rs2000 ecu its all running idle's fine but it seems to be overfueling? and when you put the throttle down it spits and splutters like its being starved of fuel,so its seems to rich on idle and lean on throttle he is a mechanic and tryed all sorts but still nothing,i thought it might have been his tps wired backwards or something

so if any 1 has any ideas give me a shout
thx all