JB4 for Honda 1.5 / 2.0L Turbo

  • $ 379.00
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Power gains of up to 40hp and 50tq to the wheels on a stock vehicle without the risks associated with flashing!

This plug and play tuner attaches to two easy to access sensors in the engine bay and works with your factory DME tuning to remap your boost, timing, and fueling for optimal performance and reduced turbo lag. It features a 64mhz processor allowing sensors to be sampled 800 times per second using dedicated 10 bit digital to analog converters, ensuring smooth and powerful performance. Power gains on the 1.5L Civic Turbo motor are up to 50 horsepower and 60 torque (40hp and 50tq at the wheels).

Installation is very discrete and it quickly removes without a trace when needed. Fuel economy during normal driving is unchanged. Compatible with all driving modes. Does NOT require flashing the ECU! Compatible with both manual and CVT transmissions.

The system is fully CANbus equipped allowing the tuning to take in advanced engine data for mapping, logging, and diagnostics. Data channels include boost, timing, air/fuel, fuel trims, throttle, knock control, and much more! Made in USA. 5 Year Warranty.

JB4 Honda Map Guide:

Map 0: Disables JB4 all together
Map 1: +3.5 psi, default map. Suggested for 91+ octane.
Map 2: +4.0 psi, 91-93 octane
Map 3: +4.5 psi, 93+ octane
Map 4: +5.0 psi, 30% E85
Map 5: +6.0 psi, 30% E85 or race gas
Map 6: User Adjustable Custom Tuning Map
Map 7: +9.0 psi, 30% E85 or race gas, full send mode!
Map 8: VALET/Low Boost Map

Wirelessly connect the JB4 to your Bluetooth 4.0 compatible iOS and Android device via the JB4 Mobile connect kit, or to your Windows laptop with the BMS data cable. Both options allow you to record and analyze vehicle and tuning data, change JB4 performance maps, and update JB4 firmware as we release free newer versions with updates, more powerful maps, and new features under development. Separate JB4 Mobile app purchase also required.

Hond Turbo JB4 tune

JB4 Features and Benefits

• Power gains of up to 40hp and 50tq to the wheels on a stock vehicle
• Improves 0-60 times and 1/4 mile times
• The JB4 offers a lot more performance, functionality, and safety than your average performance chip
• Quick Plug & Play Installation
• Includes the rugged JB4 billet aluminum enclosure for protection
• CANbus OBDII integration offering unrivaled tuning features and performance
• Improved performance over non-integrated chip tunes
• Runs as smoothly as stock, this is how your vehicle should have come from the factory
• Compatible with all driving modes
• Fuel economy unchanged during normal driving
• Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment
• 91 octane fuel or better required for performance gains
• Ethanol (E85) compatible tuning maps
• Able to read/delete fault codes
• Not VIN locked and can be removed without a trace and resold down the road
• Made in the USA
• Free USA Shipping
• 5 year warranty


• 2016+ 1.5L/2.0L turbo Honda Civic, Civic Si
• 2017+ 2.0L turbo Honda Civic Type-R
• 2018+ 1.5L/2.0L turbo Honda Accord
• 2017+ 1.5L turbo Honda CR-V




HONDA Civic 1.5 TURBO JB4 Tuned on dyno

2018 Honda Civic Sport CVT 

2018 Honda Civic Si 


2017 Civic typeR, pump gas, stock vs. JB4 Map1 Dynohonda civic type r dyno stock vs. tuned


2016+ Honda 1.5L Turbo JB4 Tuned 0-60 1/4 mile times



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