As stated this is my personal experince. I ran the 2013 Silber on my 2013 Pro, then took it off and got the 2014 update. I installed it mon the 18th on my 2014 Pro, very straight forward installation, very clean with no wiring harness. Took it up today for a test run before heading to Revy tomorrow. From the Idle to warm it up to the load back in the trailer it run better than great. The AFRs were very constant and the throttle responce was instant. One time out of many when I chopped from full throttle to nothing back to full throttle it gave a 1 to 2 second hesitation, but like I said this was one time, and couldn't get it to do it again. So at this time the update is a keeper. No ajusting just ride. Will report my experince and findings after riding Revy for a few days. There will be 4 other turbos there including Rob Alfords new XM Boondocker. This will be a very interesting few days------off to bed an then Revy