Quote:
Originally Posted by Kramzz335i
are the power gains really noticeable? or is it mediocre?
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I have driven the \n55 with a few other tunes from guys at the track. The gains from the Dinan tune are very noticable. If you check for a local BMW dealership that is a Dinan Centre, I am sure you can do a test run with your car versus a similiar Dinan tuned one.
The dealership I had my done at did exactly this for me and it was very noticeable!