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I read about some people insulating the low pressure A/C pipes with "high heat" pipe insulation from the hardware store. They say it makes the air just a bit cooler.
I am planning to do this. I figure making the ac system more efficient will have some effect on FE.
I have also heard of people bypassing the heater core during the summer, with some small improvements.
Getting the heat out of the engine bay might help as well (wrapping the headers, etc.)
What about turning the ac on, then putting it on re-circ and turning the AC off? I have done this before, and the cold lasts for about 5 minutes or so...Is there a downside to this?
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