JB1 to JB4 Upgrade KitOnline Sale

Upgrades your existing BMS Stage1 to a EA888 JB4 BETA system. The JB4 BETA features CANbus connectivity for more advanced tuning, direct AFR control, advanced safety systems for boost, air/fuel ratio, fuel trims, and engine knock, boost mapping by gear for improved traction, integrated water/meth control, and much more.

This is a 100% authentic JB1 to JB4 Upgrade Kit . The team’s authentic JB1 to JB4 Upgrade Kit has the official name and number on the back. With the JB1 to JB4 Upgrade Kit name and logo on the front, this product is the perfect gift for the JB1 to JB4 Upgrade Kit fan in your life.

The upgrade kit cost is $125 outright. There is no longer a core exchange program available. After the upgrade you can keep your old Stage1 board as a spare/backup. This JB4 requires exclusive OBDII/CANbus access while tuning is enabled and is not compatible with various CANbus enabled boost gauges or 3rd party devices that also require OBDII/CANbus.

This is an official JB1 to JB4 Upgrade Kit that the JB1 to JB4 Upgrade Kit players wear on the field during the course of a game and this JB1 to JB4 Upgrade Kit is made of 100% polyester and is machine washable.

When ordering use the drop down to specify your Stage1 hardware version. For the Stage1 hardware version systems purchased after approx 11/1/16 are REV2 and can be identified by an unused black Molex/2 position connector already incorporated in to the harness. Check the installation guide below for additional information on identifying your existing hardware.

Not compatible for Gen 3 Jetta 1.8T/GLI, Passat 1.8T and Beetle 1.8T/2.0T