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      11-09-2012, 10:35 AM   #32
eric@helix
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Drives: 01 M Coupe, 08 135i, '12 328i
Join Date: Jul 2007
Location: Philadelphia

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We've had the BMS stage 1 on the car from new, with no problems--just better power and more fun. I'd hesitate to compare the BMS product to the Unichip as was done above. They both are piggybacks, but in my experience, that's where it ends. With all due respect to Unichip, the cars with Unichips that have come through the shop over the years have been nightmares: DTCs, poor running, poor performance. Cars with BMS products have been very good.

As a general rule, I am not a proponent of piggyback tuning (vs. direct flash), but the BMW tuning piggybacks are an exception. BMS and Vishnu have been brilliantly developed, partially because of their mortal head-to-head kombat. It's really impressive what these companies have been able to do. In a sense, we're competitors of both, but I'm also a fan. I did not hesitate for one second to put the BMS tuner on our brand new car.
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