Hello guys and people at hp tuners..I am planning on investing on a tune for my 06 ss/sc that currently has a gmpp stage 2, vibrant headers catless, exhaust, injen intake and also has supporting mods..I wanted to see what hp gains am I looking at with a tune of hp tuners...very interested in knowing please let me know anybody that has done a tune on their lan and what results they achieved thanks..

 

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