Hey Doug, I remember you from the S2 forum some years back!!! how's it all going? see you've made the jump to a rs 6 tooDoug_S2 wrote:just use a wideband and see the mixture on idle to see if it ia mixture problem. then see if the car is running strange timing or differing loads on idle.
check cams

The guys on the S2 forum seriously new there stuff...
J