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Those two companies are both excellent and you will be happy with tunes from either one. It comes down to the hardware. The Xcal3 does not have gauges, you download and remove the hardware. The Gryphon, has gauges. You can remove the hardware if you wish or leave it mounted in the truck. Mine stays on my dsh. Would be lost without them.
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Jim
Flowmaster 40, K&N dropin, Tint, Roush wheels, 305/50/20s
Edge Evo with PHP custom tunes, GF 2" shackles
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