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    Any experience with HP tunners for the 99-00 trucks supercharged

    OK so I have a 99C 2500 with the L31 5.7 and a 4L80E, truck is running great so that being the case I’m gonna do what I do best and mess with it, my father-in-law has a brand new inbox LT4 hot cam and that he will give me and I bought very recently a 97K 1500 suburban with a Vortech the one...
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