turn the AC to low for a more dense charge, sell the idea to some of these people that if you have the temp set high their engine will warm up quicker to for even more fuel economy. Plus it will be charcoal filtered

02 A6 4.2 All options except warm weather package.
Hard wired 8500 w/FUNK mute switch,
Motorola hands free,
Phat box
H&R Sway bars
Eibach Pro Kit/Koni FSDs
RNS-E w/DVD player & TV
Euro Blind spot mirror