JB4 PRO
Available on Google Play
4.4(29)
5,000+ installsFreeAuto & Vehicles
Updated Aug 19, 2026 · v1.5.1
JB4 Free App!
Smart phone integration for your JB4 performance tuner to change maps, monitor live engine data, record logs, manage fault codes, update JB4 firmware, and much more! Note the JB4 PRO free app requires the JB4 PRO BT adapter and is not compatible with the JB4 Mobile BT adapter.
1 year on Google Play
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Rating breakdown
5★
18
4★
7
3★
0
2★
0
1★
2