I have an 03 Chevy Suburban with the 5.3 Z motor. I bought a Superchips 2815 flashpaq tuner and I am absolutely satisfied with its performance. My Suburban is stock right now, but I plan on doing some extensive mods to it. My question is that when I make these mods can I download a custom tune from superchips, or will I have to drop my programmer and get my computer custom calibrated? Thank you for any information.
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