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Originally Posted by macallan25
I just got an 07 Tahoe and the dealer said getting flexfuel was a really dumb idea. I got a normal 4x4 and put a special air intake system and get 5 or 6 more miles per gallon, very pleased.
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I got the husband a K&N system for his truck last year, he's gotten maybe 2-3 more miles/gallon since then. Mostly we want the flexfuel option because it's supporting local agriculture and fuel should/will be cheaper. He already uses an ethanol blend in his truck and I use biodiesel when I can. He prefers diesel, though, if we can get it.
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