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Good deal, see below
The Engine Gains for the ECU Tune on the 650i/xi are as follows:
+113hp (Brings the car to 558hp)
+135ft-lbs tq (Brings the car to 578ft-lbs tq)
*Removal of top speed limiter
*Faster Response/Acceleration
*Can tune for catless downpipes (remove check engine light, etc)
Price: $1995 Retail, will give it to you for $1500.
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