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whats the best thing to do to get better gas mileage? additives?
 

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Well there are a bunch of places to start, but the best item to start with would probably be a programmer. I dont know if you have the 07' silverado classic or the new body style, if you have the old BS then probably a diablo tuner would be a good start. If you have the new BS then PPE or Bullydog both have stuff out for the new engine. A programmer will give you a lot of adjustability and you can put it on a mild setting to give you a nice mileage increase (2-3mpg), if you can keep your right foot out of the throttle.
 

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Well there are a bunch of places to start, but the best item to start with would probably be a programmer. I dont know if you have the 07' silverado classic or the new body style, if you have the old BS then probably a diablo tuner would be a good start. If you have the new BS then PPE or Bullydog both have stuff out for the new engine. A programmer will give you a lot of adjustability and you can put it on a mild setting to give you a nice mileage increase (2-3mpg), if you can keep your right foot out of the throttle.
:thumbsupright on..
 
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