My .02 is the same as PATRIOT's. I have had a few trouble codes from changing out the Mass air flow sensor, etc. and the Predator's ability to read and erase the codes makes it a better product for me.
I had a Hypertech in my 2001 XL Denali, but removed it and the Predator is more friendly and allows you to make finite adjustments to some of the programming yourself.
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