I purchased the Racechip RS for my BMW F15. It was delivered faster than expected. From the moment I opened the shipping box this product is first class. The package the product came in was very pleasing to the eye, the install only took 6 minutes, and the performance is by far the best part. It woke my X5 up. I can't speak for gas mileage yet, but I will keep you updated.
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Customized Plug 'n Play tuning for diesel and gasoline engines. Enjoy up to 30% more power and torque. Traceless ecu chip, easy to install and remove, Autobahn tested and safe for your engine.
