I thought it would be helpful to start a thread dedicated to the Cobb Pro-Tune that is offered by almost 20 authorized Pro-Tuner's around the United States. A list of those Pro Tuners can be found here:http://www.cobbtuning.com/Domestic-P.../70754.htm#BMW
For those of you outside of the United States, a list of international Pro-Tuners can be found here:
With the increasing popularity of the Pro-Tune and e-tuning, it will be helpful to open up our minds as to what types of different custom tunes are available and to read reviews of those who have received custom tuning.
Please let the community know what type of custom tune was performed (i.e. meth, E85, Race Gas, Upgraded Turbo's etc.) and post your thorough review and dyno numbers, with a baseline, if possible.