Funny you should mention cold air; I always notice as it warms that my 90 V8 gets a bit sluggish. It always has. A/C seems to only be a small part of the cause. It is almost as bad as the Biturbo S4, strange. On Apr 28, 2005, at 12:50 PM, dsaad at icehouse.net wrote: > Winter mileage is worse at 13 to 15 - but the motor loves cold air.