Brian, sorry for the late follow up, but got the Motorvac about a good month ago and my mpg's are GREAT! I'm getting between 240-280 miles on a full tank! LOVE IT! The truck certainly seems more powerful overall, especially taking off from a stand-still (stop light, etc). However, day before yesterday, I tried accelerating (NOT GUNNING IT) a bit from around 60mph, and felt the slight putter

- fortunately, it lasted for about a second or two, then quickly regained. It's not THAT big a deal, but I want the truck to be "healthy"- if that makes sense.
I read just today on another thread where a couple of fellow members suggested the catalytic converter. Any thoughts??