BD Diesel Smarty JR computer programmers can optimize your vehicle's drivability and improve its fuel economy. With three performance levels--40/70/100 hp--the Smarty JRs download three times faster for reliable, safe power. You'll have ABS tire height updates in just few seconds, and installation is easy--no tools are required and there are no fuses to pull! These programmers work off of your OEM hardware and include a built-in USB for updates from the Internet, programmable parameters for fine-tuning, and a Power on Demand function. Get more power and better fuel economy with BD Diesel Smarty JR computer programmers.