It's becoming clear to me that I'm gonna have to install one of these in my ZR2 to see what happens. I've got a lifetime average over 12k miles of 12.1 mpg in my ZR2. I've gotten 26 mpg over 50 miles and I've gotten 5 mpg off road. Since it seems to help the Tahoe, we'll see if it can overcome the horrible aero package in the ZR2 and my driving habits.
Last edited: