I would want to read the fine print very carefully on any third-party warranty That carbahn is giving you …probably full of all kinds of exclusions and loopholes for them to avoid pain, or to avoid paying in full. They have no interest in dropping money to fix motors.
If you want that much horsepower just go buy an M5 and keep it stock.
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Sean
2016 X5 sDrive 35i
2018 M550i
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