Quote:
Originally Posted by Timberwolf
2017 X5 50i with Burger Motorsports JB stage 1 on 19s with Pirelli Winter tires.
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Timberwolf, I took the Burger Motorsports JB stage 1 off my 2014 X5 50i and put it on my 2017 X5 50i and noticed a reduction in performance than with the car just in factory standard tune. I have now twice compared the Sports power and torque display readings with the tune on and off.
With the tune on I get LOWER performance readings than with the tune on.
Would you be able to test it also?