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.
Plug & play power — Gains are 80whp/100wtq on pump gas and up to 150whp/175tq on higher octane or E85 mixtures!
Plug & play power — Gains are 80whp/100wtq on pump gas and up to 150whp/175tq on higher octane or E85 mixtures!
Version 1.
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.
Adds a high fuel pressure connection to the JB4 for S58 platforms, allowing direct control of fuel pressure and fuel trims
***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