If I remember right, mostly alcohol is added to reduce the freezing temperature of gasoline during the winter months. I have measured up to a 10% difference, in mileage. I would expect that, depending on your location, the percentage of additives will vary. After all, I'm in NM, where the coldest it usually gets is around 20*F in Albuquerque, whereas in more northern areas of the US, it often gets below zero degrees F.

I would highly doubt that a CAI would do anything but increase mileage. You get more power from greater efficiency.

'97 Sportage, 4" Lift 1" BL, 31" BAJA CLAWS, Rallye 4000s, Line-Xed Hood, Grille, K&N, 2.25" Exhaust, RS9000s, GPS...

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