Description JB4 Replacement and Upgrade Chips The replaceable 2580 master chip controls the communications between the JB4 and your BMS data cable or JB4 Smart Phone Wireless Connect Kit as well as the model specific firmware. If unable to connect to the JB4 try replacing this first as often it's the culprit. Be sure to specify which firmware you need in the drop down for the chip to work properly with your model. We also have 2431 and 24K22 port injection integration and anti-lag firmware update chips in the drop down. Click here for JB4 Upgrades, Replacement Control Boards, Upgrade Chips, Wiring Harnesses, 3.5 & 4 bar TMAP sensors, Anti-Lag kit, 2STEP kit, Port Injection Control Box, Solenoids, Enclosures, and more!
