Don't let weak and unresponsive factory gas pedal mapping ruin your driving experience!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Don't let weak and unresponsive factory gas pedal mapping ruin your driving experience!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Wirelessly connect your JB4 to your phone!
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For JB4 systems produced 2017 and later. Please check board diagrams to properly identify your JB4 before ordering.
For use with JB4 only
Plug & play power ? gains starting at 30whp/40lb-ft on a stock car!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Not for sale or use in the state of California.
This product was last offered at the strikethrough price on
06-17-2026
Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Version 1.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms