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ECU reprogram for LESS power - better fuel economy
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03-21-2008, 11:46 PM
sp33dd3m0n90
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Join Date: Aug 2007
Location: Littleton, Colorado
Posts: 136
I remember a gmc or chevy truck that switched from 8 to 4 cylinders when you didn't need the power. Better fuel economy with 4, but less reliability.(GMC/ Chevy)
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sp33dd3m0n90
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Model:
X5
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