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No issues. And especially if you are going through Dinan. I had Powerchip.com tune my X6M. I am proud to say that the car runs good. The torque went from 501 at the crank to 580 at the wheels. I also have full exhaust. The HP went from 555 at the crank which is about 420 to the wheels stock to 470whp now. I broke the left rear half shaft about a month ago because I am making so much torque now, took it in to the dealership and they knew nothing of my tune. Unfortanitly they voided my warranty anyway due to my custom exhaust. I strongly encourage the tune though especially Dinans. Good luck
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