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Moe1988
21st November, 2017, 10:19 AM
guys im new to this so yhis might sound stupid :D ....
i own an e39 m5 , how can i chip tune it for more hp and maybe a lil backfire on high rpms . and stay on the safe side

what tools i need ! i have maxysis , launch , opps , fvdi , vvdi prog .

thanks