Been looking into buying a programmer for my 5.3l silverado, lookin at either bully dog gt tuner or the hypertech max energy. Which one or other ones would be my best bang for my buck not looking for huge mpg gains more horsepower n torgue than gas mileage. Any help you can give me would be much appreciated

 

Do some research of some custom tuners around you, be much happier with a custom tune rather than a programmer. Custom tune can be had for same price if not cheaper. Blackbearperformance, Wheatley custom tuning, or nelson tuning. Or find a shop around you that'll do it.