JB4 for Polo GTI 6C 192hp / Audi A3 8V 1.8TFSI 180hp



JB4 for Polo GTI 6C 192hp / Audi A3 8V 1.8TFSI 180hp


The JB4 is a true user adjustable plug and play solution for all MQB based models in the VW Audi Group range. Power Gains: Starting at 45bhp and 40ft lb with 91 octane/95Ron with + 4.5psi boost over stock on the default setting. Up to 60bhp and 60ft-lb with bolt on modifications, higher octane and boost adjustment with the optional BMS Data Cable. 

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. 

The unit can be used with our JB4 Bluetooth Connect kit providing for full in car engine parameter display, map switching and adjustment Support is also provided for the IS20 turbo upgrade providing for outputs past the 300hp level.

• VW Polo 6C GTI 
• Audi A3 8V 1.8T FSI Non-US 
• Skoda Octavia 1.8T FSI
• Audi A1 1.8TFSI 
• Seat Leon SC FR 1.8TSI 
• Seat Ibiza Cupra 1.8TSI 


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