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One Major draw back I see on a flash is, if you don't have all your mods already installed, then your gonna have to re-flash every time you get a new mod... With a piggy back I think you have more options available with the various stages, personally I like the idea to change your tune on the fly based on your other bolt on mods, VS. every time i change parts I have to get re-flashed... I could be wrong though...
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BMW X5 35i: Boopie Exhaust & Intercooler, K&N Drop in Filter, JB3 (3+ psi)
2013 Dodge Challenger R/T: CAI, Catch Can, Custom Exhaust, Headers, 87MM Throttle Body, Diablo Custom 93 OCT Tune |