Driving habits almost the same if not ridiculously more conservative after the SC install. I just knew I shouldn't be the only one in the world losing fuel economy while all others were experiencing gains so I started coasting a quarter mile before stop signs, coasting down hills at every chance, etc. to attempt to squeeze out the reputed increased MPG - never happened. I dropped about 3-4 mpg initially (first eight months). After a new MAP sensor and tune, I've gained back 1 mpg. I really didn't expect to gain MPG from the beginning, but was hopeful that I'd somehow maintain the pre-supercharger fuel economy which was around 19-20 mpg (greater out on the highway holding about 55-60 mph), and that's with a 2.5" lift and baby 35s. By the way, my fuel economy is hand calculated.

Here's my theory at the moment (setting aside physical laws) - if you had great fuel economy pre-supercharger you're going to lose mpg. If you were in the low to mid-teens pre-supercharger, you're going to gain 1 or 2 mpg. Again, this is based purely on anecdotal data I've observed here on the forum. I would love to hear about someone who started with 20 mpg who is now getting 22-23 mpg after installing a RIPP supercharger, but I don't think it's going to happen. There were some initial reports of huge fuel economy gains, but I think that was traced back to a "bug" in the Diablo tune that was later corrected.

I tried to implement option 2, "driving so gently that you are not getting the benefit of being boosted" but without success. No measurable MPG improvement most likely due to my already conservative driving habits. I wanted the extra power for the occasional traffic conditions where it was warranted, but still drive my JK mildly. I do notice a little more torque and power at lower rpms which has made a positive difference in around town driving so the blower is contributing even when not in the 3K plus range band.