Superchips 3705
05-18-2005, 05:59 AM
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Superchips 3705
Unless my math is bad, fuel economy actually went down with Superchips 3705 in performance mode. Would another mode do better? Tried the middle mode and not much difference. Am I doing something wrong. Does the micro tuner take a while to be effective? I am a newbie and "Diesel Dumb"
05-18-2005, 05:01 PM
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mine doubled in-town fuel mileage, and increased higway mileage by 8 MPG. did you notice a power difference? if not you may have something wrong with the tuner. i noticed a big difference in mine, hi perf. was the best for my truck
05-19-2005, 04:29 AM
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Did notice a difference in power. I am going to run another "full tank" test. Probably a mistake of some sort on my part, although a 445 mile trip prior to the 3705 install produced 20.09 mpg. Highway speed was kept to 2000 rpm. (67-8mph) 3.55 diff, std. shift 5 speed. Straight piped, K&N filter, fp gauge. Original equip. sized tires. 245/75 R16's. Odometer reads 75000+ miles. Thanks for all the answers. Keep on truckin'
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