can i reset the computer on an au xr8 220 if so ow do i do it thanks guys

Disconnecting the battery for an hour or so will do it.

don't forget to re-learn the computer properly, otherwise you will have a dog for about 500km. Idle in P for 2 min, idle in D for 2 min ,then repeat
and don't forget to re-learn the BTR auto if equipped ,after the engine you will need to turn ign off for 10 min then idle in D for at least 1min, then turn off engine ,instantly turn ign to on without engine running ,select D then hold throttle on full for at least 1 min then put in park & turn ign off for 2 min. This allows the ECU to know the resistance settings on the throttle position sensor.

see i told u it was all a matter od dc the battey for 1hr or so..