I wouldn't, in my experience idle RPM can make a noticable difference in the AC getting is work done in hot summer stop and go traffic. The AC compressor performance gets pretty marginal at those RPMs. I have on several occasions over the years ,taken cars to dealers with AC complaints in traffic and had them raise the idle a hair. I don't think the fuel usage would even be measurable and personally I would prefer to have the AC maximized for the summer. Just my 2 cents as I live in a fairly hot area and I'm sure, as they say, others mileage will vary...coolsun20 said:Should I wing by dealership and have it tune down..