I have the Vitesse on my 2016 silverado with a 6.2 and I can tell you it's DEFINITELY worth it. My other truck is a 1998 standard cab long box with a vortec 5.7 with a Black Bear tune and a ported throttle body that is operated by a cable, not drive-by-wire
and the throttle response is ABSOLUTELY INSTANT. Switching back and forth between these trucks made me realize how tremendously terrible these newer truck's throttles are. I got a Diablosport intune so I could turn off AFM and found on it there is
also a setting called throttle boost. After turning throttle boost up to 20 (max setting), throttle response was better but not good enough. Then I read reviews on how much better ported throttle body's are for throttle response, so I got one from Katech
for $230. Not much difference at all, much less than I was expecting. Then I got the Vitesse throttle device because it was 100 or so dollars cheaper then a sprint booster, and that made all the difference in the world. Truck is sooooo way better to drive
now and on the very hilly rural back roads that I drive it was completely impossible to maintain a relatively steady speed with the factory throttle having to chase the throttle up and down so much. Now it's very easy to maintain a relatively steady speed.
When I first got it I had the setting too high and kept accidentally barking the tires driving through town and leaving stop signs so I just kept turning the setting down until I stopped accidentally barking tires and now the throttle response is nearly as good
as my 1998's. If I was going to do it all over again, I would not get the Diablosport (garbage in my opinion), or the ported throttle body (nice quality but not much bang for the buck), and just get the Vitesse throttle booster