Seems to be no middle ground.
Sad but some of these guys either don't know how to figure their MPG or don't want to say they bought something that doesnt work.
I had a fuel preporator on my KW, didn't do a dam thing but buzz in the radio when I had it on AM.
In defense of the preporator, the manufacturer didn't make any claims for the electronic engines, only said MAYBE more power and MPG.
THe fuel preporator does claim to work on older mechanical engines.
What I find really amamzing is they both claim power and MPG, and they both work opposite one another
The preporator takes the air OUT of the fuel, and the turbo 3000D puts air IN the fuel.
Anyway packrat, thanks for an HONEST assesment, wonder why its so hard for some of these driver/owners to do the same, GEEZ, I'd hate to see someone make a mistake buying some snake oil, even if I did.
Here is a link to both of them, the fuel preporator, was a father and son deal, but they split, so now one of them is called "air dog" and the other calls it the "F.A.S.S." system.
SNAKE OIL , JMHO
http://www.iowa80.com/iowa80/shop?method=product&prodid=25857
http://www.itpdiesel.com/store.php?crn=151&rn=284&action=show_detail