*** WARNING *** The firmware and map guide below applies to the Stage1 system only. NOT the JB4 system. Uploading Stage1 firmware to the JB4 will likely require you to mail the JB4 control board back in to be reflashed. Don't upload Stage1 firmware to your JB4 system.
This thread is for VW JB1 Firmware Updates and Map Notes
The same BMS DATA to USB cable is used for all of our tunes and strongly suggested for free software updates and new features as we post them. The JB1 tune uses the JB4 interface. Instructions can be found here: https://www.jb4tech.com/forum/model-...ion-directions
Map List:
Map 0: Stock bypass. Stage1 fully disabled
Map 1: 4.8psi over stock, adjustable by changing "boost safety" setting on user adjustment tab.
Map 3: Progressive methanol mapping
Map 6: Custom tuning map entered on user adjustment tab.
Firmware: v4
1) Changed processor speed from 8mhz to 64mhz and increased the sampling rate of the analog I/O 4x. This seemed to have improved the idle stability in some models.
This thread is for VW JB1 Firmware Updates and Map Notes
The same BMS DATA to USB cable is used for all of our tunes and strongly suggested for free software updates and new features as we post them. The JB1 tune uses the JB4 interface. Instructions can be found here: https://www.jb4tech.com/forum/model-...ion-directions
Map List:
Map 0: Stock bypass. Stage1 fully disabled
Map 1: 4.8psi over stock, adjustable by changing "boost safety" setting on user adjustment tab.
Map 3: Progressive methanol mapping
Map 6: Custom tuning map entered on user adjustment tab.
Firmware: v4
1) Changed processor speed from 8mhz to 64mhz and increased the sampling rate of the analog I/O 4x. This seemed to have improved the idle stability in some models.
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