Straight off of the site..............
Fast guide to Smarty-JR Features
CaTCHER software's inside
Three different performance levels: 40 / 70 / 100 hp
Improved fuel economy
Optimized drivability
Fastest download in the industry, up to three times faster than
the competition, a typical ECM update takes about 3.5 to 5
minutes, depending on the truck model
ABS tire height updates in just few seconds from 22,5" to 44"
Not traceable in the stock setting. Smarty leaves no footprint
Manual High-Idle is enabled in all softwares
Reads Diagnostic Trouble Codes in plain text
No tools required, no fuses to pull
USB built in for simple updates from internet
Easy installation
Reliable, it works off your OEM hardware