Engine Management

Wirelessly connect your JB4 to your Smartphone!Monitor your vehicle with a variety of live gauges, Change mapsTake logs to tune your vehicle to perfection, Change user adjustment/methanol settingsGraph your logs to review performanceRead/Delete error...

If you have already purchased the BMS Stage 1 Tuner and would like to increase the default 3psi boost setting, you can do so with this cable and interface software.  Software needed only if changing from default +3psi boost setting: Latest Interface...

Monitor your 0-60mph, 60-130mph, 100-200kmh, 1/4 mile, 1/2 mile performance, and more!  Dragy uses high speed GPS satellites to accurately measure your vehicles performance within 1/100th of a second, producing identical results to the much more...

The new EWG connections allow the JB4 to directly add and subtract wastegate duty cycle (WGDC) from the wastegates providing additional tuning flexibility. Most useful for modified vehicles that are having problems targeting boost properly and will also...