OK... The SB Chronicles continue here in East Tennessee...

Someone, somewhere here mentioned a possible SB effect on mileage, so thought I'd check. ...Had to make a run down to Chattanooga and back today... About 240 miles round trip via mainly interstate... Ran about 85-95 down and about 75-80 back... My mileage was 30 MPG! Maybe that is normal (?), but I have NEVER gotten better than about 25 mpg on the road and c. 18-20 around town. I have always attributed it to my lead foot, as I just can't seem to avoid pushin' it at every opportunity...

I have absolutely no idea why this device would make a difference in this area, but I will try and check it around town which is where I spend most of my driving time...