Well the Pro's for switching it that you can get custom tunes for how you drive your truck. you will have a little more power and depending on how you drive you will have some more gas mileage, plus you will get an awesome sticker to put on your truck! haha  , the only down side that I can see to switching is the money you have to pay. but for what you get I think the money is worth the service and the extra performance and confidence in your truck.
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2002 F250 MT, Bill's 100hp custom tune on the PCM, Phoenix: stock, 45hp, 65hp-wm, 80hp-wm, 120hp, and no start. pioneer nav radio, 12" memphis sub and 500W amp, infinity 5x7's, alpine 4-ch amp, stock front speakers soon to be focals
2006 Mustang GT, SCT XCAL3 91 tune, custom tunes soon, pioneer nav radio with a JL Audio W3 12" sub and a jl audio jk3602 amp. Speakers and amp soon
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