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Welcome to Discount Tuners, the best place online for cheap performance tuners! All of our tuners are pre-owned, but since these products typically have less than an hour of use and since they are all guaranteed to be unmarried and all updateable tuners have been updated, we guarantee them to work and function exactly like new! We have over 10 years of experience selling performance programmers from Diablosport, Hypertech, Superchips, Edge, Banks, Bully Dog, SCT, and Cobb! We strive for customer satisfaction and offer a money back satisfaction guarantee! We also take trade-ins and buy used tuners in any condition!