thanks for info stu, the ecu is an l6 the part numbers match up exactly to the other cars ecu mate. the part no on the greens is 0280 150803. i set the co on the car at 2.5 approx but i didnt set the boost level yet as didnt think this would affect anything other than performance. your chip works perfect in the spare ecu so id say its a fault in my cars original one. cheers