Originally Posted by svony

So although the CO2 has been set to the recommended level at idle it will most likely need to be further adjust on the rollers across the full RPM/load range? wont that affect the idle CO2? (higher?).

I've set my CO2 to 3% based on the mappers' recommendation but I have not being able to get to the rollers as yet. Looking at the spark plugs it looks like the car is running a bit rich at idle but seems fine under boost (14psi) with no sign of deonation.