lts70:
mine does have a lag, but i honestly think its in my speedo as my needle has started sticking/jumping, and the odo isnt wanting to turn.. its about 5 mph off, but again, i think thats a speedo problem.. it sits on 5 mph when your not moving, so i expected that to be a problem. overall im extremly happy with the cable-x. once you figure out how to set the dip switches, it works great!! i have never seen such responsive customer service either... 2.5 hr response time, after hours, on a week that they are having their yearly shut down.
brad: ive actually heard mixed things on that.. the best i can determine, is that the t5s can have that done but the nv3500s cant. i read in a couple places that the speed sensor on a t5 sits above the output shaft like a normal old manual cable, whereas my nv3500 points directly at the output shaft.. i didnt look to hard into it though after finding a good deal on this cable-x used
huck: your truck was the first reason i did the swap
im actually not sure on the mpg after, but before last time it was on the road was about 12mpg if i remember right. i havent ran through a tank with a working speedo yet