Tuner for Chevrolet Tahoe?

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Oct 16, 2003
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Northern Virginia
Looking at a few tuners such as: DIABLOSPORT INTUNE I2 TUNER

To tune the 2008 Tahoe with 5.3L, delete 4-cyl mode. and change tranny shift points.

Question, is there a laptop based tuner that is software I can load to the computer and connect it to the datalink port?

Or do I have to buy a stand-alone tuner such as the one above?
 
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