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I would say the dyno tune is best next. I can handle the driveability tune but you need a dyno for all the WOT tuning.
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http://www.leftcoast32.com
'07 Black TrailBlazer SS "MP122HH" MagnaCharger
'05 SSR 6 Speed 427 "MP122HH" MagnaCharger
Authorized MagnaCharger Dealer/Distributor
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