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.
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.
Remove the dead area from your throttle pedal.
Alter parameters and fine-tune � wirelessly!
For use with N54 JB4 systems and any JB4 manufactured prior to 2017. Please check board diagrams to properly identify your JB4 before ordering.
This product was last offered at the strikethrough price on
05-12-2026
Plug & play power — gain up to 100 horsepower on a stock car!
For G-Chassis Vehicles Only; Not for sale or use in California
Stop leaving horsepower on the table and finally experience what your hot-V V8 is truly capable of
10X Entries Into Our F80 M3 Sweepstakes
Version 1.
Remove the dead area from your throttle pedal.
Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash.
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.
***Please see photos and description prior to ordering, all sales final.***
Wirelessly connect your JB4 to your phone!
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
10-30-2026