U300 and the Nexiq ProLink 9000
Attached are two photos of my new toy, the Nexiq ProLink 9000 reader/programmer for the Detroit Diesel with DDEC II ECU. Since I don't yet have a user manual, I have been treading lightly using the keys as not to change any of the operating parameters. As you can see, since new, it has averaged 7.9 mpg. The last owner used it in the construction business hauling steel on a large trailer from North Carolina to Oklahoma. Some may be skeptical with my claims of up to 12 mpg but you can easily see how the almost 8 mpg average can be easily bettered with care loading, speed, tire pressure, etc. Here in the mountains, we are lucky to get 6 mpg to campsites in a two hour radius but the Detroit really shines if you are on flat ground and watch your speed.
Don't know what the strange image is on the MPG but it's not visible to the naked eye.
Other like readers are available on eBay for good prices. Some are incredibly expensive but the deals are there. I just had a Craigslist seller offer me a Nexiq Pocket IQ for $400. A super deal but without the specialty software ($500 additional) it will only read the codes, etc. and will not reprogram anything.
The unit pictured below was $133. Pretty inexpensive for what it can do.
Pierce