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I’m use to my fords loading tunes in with a diablo or SCT hand held tuner to load maps/tunes in. Do these GM cars handle that ?
 

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I've been using the SCT X4 for over a year now. More adjustments and accepts headers that superchips won't.
IF you keep on modding you can buy their computer software and fully tune your car. The hand held can store multiple tunes and you can use the hand held to switch between tunes. Best of both worlds
 
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