Don't let weak and unresponsive factory gas pedal mapping ruin your driving experience!
Don't let weak and unresponsive factory gas pedal mapping ruin your driving experience!
Wirelessly connect your JB4 to your phone!
For JB4 systems produced 2017 and later. Please check board diagrams to properly identify your JB4 before ordering.
For use with JB4 only
Features CAN-Bus connectivity for more advanced tuning — gain up to 45hp/45lb-ft on a stock car, 90hp/70lb-ft on a modified car
Not for sale or use in the state of California.
Plug & play tune with gains up to 65hp/65lb-ft.
Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash.
Version 1.
Plug & play power — Gains starting at 25bhp/50lb-ft on a stock car!
Stylish protective waterproof case for your JB1 or JB4
Unleash your JB's full potential!
For use with JB1 only
Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash. Includes JB4 side repair harness molex pigtail.
Plug & play power — Gains starting at 25bhp/50lb-ft on a stock car!
ALL SALES FINAL. ITEMS MAY BE DAMAGED OR MISSING COMPONENTS. PLEASE SEE IMAGES BEFORE PURCHASING. Want To Haggle? Give Us A Call Or Chat To Make An Offer On This Product!
This product was last offered at the strikethrough price on
05-02-2026