GMPP Turbo upgrade
#1
GMPP Turbo upgrade
Purchased the GMPP Kit, $572 w/o tax, installed for $250. Seems really "torquey" about town, audible turbo whine when boost on. Noticeable increase in acceleration. I would recommend this mod to your SS as it doesn't adversely effect driveability or create warranty issues. Will advise of any problems.
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