Just got my ecu back today from renntech. Shipped it out on Tuesday got it back today at 10am. Hook it back up and took a test drive on the freeway. I have to say the power feels much better and went over 80mph just to see if limiter is deleted. I don't hardly go over 80 mph in this van cause its use as a weekend for family outings. The van feels like it pulls more and quicker Respone. Can't go wrong with renntech, I have their upgrade on my other AMG also.