Here's a summary of some of the products I've come accross. Dinan is the easiest to install with just a few clicks but with minimal gains in power. Burger is a little more intricate to get the ODB into the interior but with more power and flexibility than the Dinan tune. My local tuning shop offered the most power but was the costliest option. The local tune really made this car quite an angry machine. Tons more power and torque. We weren't able to Dyno it due to AWD but it has at least 60 RHP and potentially more in torque. The car pulls hard and has power throughout the RPM band. This car is officially fun to drive!
Dinan Tune $299
Approx 30 HP increase at the wheels
http://www.dinancars.com/product/d44...ries&mid=1238/
Burger Tuning $529
Approx 40 HP increase at the wheels
http://www.burgertuning.com/B58_JB4_...nce_tuner.html
Local BMW tuning shop $700
Approx 60+ HP increase at the wheels
http://bimmerperformancecenter.com/b...s/dyno-tuning/
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2020 BMW X3 M40i, Black Saphire Metallic, Evolution Raceworks High Flow Catted Downpipe, BootMod3 Custom Tune, Bavsound, Ceramic Coated