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Old 03-23-2011, 01:27 AM   #24
MarylandSpeed
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Drives: 2012 ZL1 & 2010 2SS/RS
Join Date: Jul 2009
Location: Maryland
Posts: 3,378
AFM works fine..they have used it in trucks for years. My experiance has been that with a good tune, you can turn if off, and not see a loss in fuel economy. The tuner makes the engine run better, and be more efficiant, so it uses less power.
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