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Originally Posted by MR RIZK
Any insight into the hardware changes if any?
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I believe tuningbox as they always do and call MHtronik. Similarly to what AC Schnitzer offers. Definitely not what I would opt for when you have a M3/M4 CS tuning file ready to be flashed in your car or bootmod options around the corner.
Only take a tuningbox that is on a dyno tuned specifically to your car and you need it for insurance and warranty issues. Confirm the numbers with a tuner on the dyno. Other than that, stay away from it with a massive distance if you are decent true enthusiasts and know what you are doing.
MR