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BMS for Honda 1.5L / 2.0L Turbo JB4

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1 Year MFG
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Product Details

JB4 Stage 4

This plug and play tuner attaches to two easy to access sensors in the engine bay and works with your factory ECU (engine computer) to rescale your boost, timing, and fueling for increased performance and reduced turbo lag. Power and torque are raised across the board providing a dramatically improved experience behind the wheel.

Unlike common ECU remapping with the JB4 your vehicles computer systems are not overwritten or changed in any way and the vehicle is never aware it's actually making more than the factory power levels. All factory designed engine safety systems remain in place and active.

Installation is quick and discrete with the JB4 removing without a trace when needed. Fuel economy during normal driving is unchanged. Compatible with all driving modes. Made in USA. 5 Year Warranty.

The optional JB4 mobile adapter or BMS data cable allows you to connect the JB4 to your smart phone or laptop for data logging, diagnostics, map changes, custom tuning, and free firmware updates unlocking new features as we release them.


  • Power gains of up to 40hp and 50tq to the wheels on a stock vehicle
  • Quick Plug & Play Installation
  • CANbus integration offering unrivaled tuning features and performance
  • Runs as smoothly as stock, this is how your Honda 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
  • Ethanol (E85) compatible tuning maps
  • Able to read/delete fault codes
  • Not VIN locked, can be removed without a trace and resold down the road
  • Made in the USA
  • Free USA Shipping
  • 5 Year Warranty




Honda 1.5L/2.0L Turbo JB4

  • 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

Installation Information

Installation Time

(approx) 20 Minutes

Difficulty Level

Simple installation for anyone

Installation Guides

How to Install JB4 HONDA

Product Videos

Honda Civic 10th Gen 1.5L Turbo JB4 Mobile DEMO 04:53

  • Honda Civic 10...

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