Can VSR not send you a base map to drive there on? At the very least I'd do some data logging of what's going on with the GTM map and your new motor before I got out on the highway for a long drive.
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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent
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