Quote:
Originally Posted by A Frankfurt
No performance company backs up the factory warranty.
Even with Renntech, if you develop a drivability issue you may want to flash the ECU back to stock.
But each scenario is different and if your dealer is ok with performance upgrades then you need to discuss with them before hand.
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ALREADY DONE .. THEY ARE BACKING THEM LOCALLY VIA THEIR DEALERSHIP GROUPS!

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Current Garage:
2019 M2 Comp, 2019 GLC 63 AMG , 2017 GLS 63 AMG, 2015 S63 Amg, 2008 John Dheer Gator XUV
Past Cars:
2016 M6 Cabrio, 2015 GLK 250 Bluetec, 2007 M6 Cab, 2011 S63 Amg, 2008 S450, 2006 330xi, 1998 Z24, 2002 Chev Suburban