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2003 GMC Savana Power Programmers & Performance Tuners

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Reviewed By RICHARD J (Parachute, CO) Reviewed for a 2005 GMC Savana —7/13/2014 9:25 PM

Big difference in power. I get 3 to 4 mpg more when using performance level.

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Reviewed By Kolton B (LEVELLAND, TX) Reviewed for a 2009 GMC Sierra —7/19/2016 11:58 PM

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Reviewed By gary m (castaic, CA) Reviewed for a 2004 Ford F-350 —8/22/2016 9:23 PM

Installed in 15 months day it arived downloaded stage 2 noticible power difference better mileage two days later downloaded stage 3 more power picked up a mile or two more. This truck is running the way it should. The second download took about 5 min. Less things to enter after the first download. If your looking for more power and much better mileage, this is fire you.

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