Unlock additional power and performance with the JB4 tuner
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Wirelessly connect your JB4 to your phone!
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply For JB4 systems produced 2017 and later. Please check board diagrams to properly identify your JB4 before ordering.
Plug & play power — gain up to 100 horsepower on a stock car, 160+ horsepower on a modified car!
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply Not for sale or use in the state of California.
Brand:
ES#:
3508712
Mfg#:
JB4N54
In Stock
$479.00
This product was last offered at the strikethrough price on 05-19-2026
Plug & play power — gain up to 130WHP on a stock vehicle without the risks of flashing!
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply For models with the Gen3 engines only (B48N/B48P/B48TU2 & B58N/B58TU2)
Quick and simple add-on for increased power!
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply For FWD models with 4 wire TMAP Sensor
Alter parameters and fine-tune � wirelessly!
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply For use with N54 JB4 systems and any JB4 manufactured prior to 2017. Please check board diagrams to properly identify your JB4 before ordering.
Brand:
ES#:
3508698
Mfg#:
JB4-BT
In Stock
$149.00
This product was last offered at the strikethrough price on 05-12-2026
Plug & play power — Gains are 80whp/100wtq on pump gas and up to 150whp/175tq on higher octane or E85 mixtures!
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Fuel-It! CANfuel allows your ECU to control up to 8 fuel injectors sequentially in addition to an ethanol content sensor, low fuel pressure sensor, extra pressure sensors, EGT probes, external fuel pumps, and much more.
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply For N54 equipped E chassis vehicles only
Plug & play power — gain up to 100 horsepower on a stock car!
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply For G-Chassis Vehicles Only; Not for sale or use in California
Plug & play power — Gains are 80whp/100wtq on pump gas and up to 150whp/175tq on higher octane or E85 mixtures!
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Plug & play power — gain up to 60 horsepower on a stock car, 80+ horsepower on a modified car with a B58!
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply Not for sale or use in the state of California.
Plug & play power — gain up to 100 horsepower on a stock car!
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply For F-Chassis Vehicles w/ Type-B Harness Only; Not for sale or use in California For vehicles with a Type-B Harness only (See Photos for more details)
Plug & play power — gain up to 100 horsepower on a stock car!
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply For F-Chassis Vehicles w/ Type-A Harness Only; Not for sale or use in California For vehicles with a Type-A Harness only (See Photos for more details)
Brand:
ES#:
4212683
Mfg#:
JB4-N63-F-A
Ships in 2 Business Days
$779.00
This product was last offered at the strikethrough price on 09-07-2026
Plug & play power — gain up to 100 horsepower on a stock car!
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply For F-Chassis Vehicles w/ N63TU Engine Only; Not for sale or use in California For vehicles with an N63TU engine only
Plug & play power — gain up to 60 horsepower on a stock car, 100+ horsepower on a modified car! For Electronic waste gate!
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply *For Electronic waste-gate*
Lifetime Replacement
