Wirelessly connect your JB4 to your phone!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For JB4 systems produced 2017 and later. Please check board diagrams to properly identify your JB4 before ordering.
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
Features CAN-Bus connectivity for more advanced tuning — gain up to 50hp/70lb-ft on a stock car, 75hp/90lb-ft on a modified car
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Not for sale or use in the state of California. For 252hp engine variant only
Features CAN-Bus connectivity for more advanced tuning — gain up to 28whp/50lb-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.
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
Features CAN-Bus connectivity for more advanced tuning — gain up to 45hp/65lb-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.
Features CAN-Bus connectivity for more advanced tuning — gain up to 28whp/50lb-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.
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
Features CAN-Bus connectivity for more advanced tuning — gain up to 45hp/65lb-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.
Lifetime Replacement
