Ignitions and Electrical Computers, Chips, Modules and Programmers

JB4

Honda Plug-and-Play Performance Tuner Module

$529.00

SKU: JB4-HONDA

In Stock
In Stock
Ships by Aug 3
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The JB4 Tuner is a plug-and-play performance module for turbocharged Honda vehicles, designed to integrate with your factory DME tuning. It connects to two easily accessible sensors in the engine bay, manipulating boost, timing, and fueling to enhance performance and decrease turbo lag. With a 64mhz processor, it samples sensors 1000 times per second for smooth and powerful operation. This tuner is engineered to deliver significant power gains, offering up to 40 horsepower and 50 torque at the wheels on stock vehicles without the risks associated with ECU flashing. It does NOT require flashing the ECU and is compatible with both manual and CVT transmissions. Fuel economy remains unchanged during normal driving, and it is compatible with all driving modes. The system features CANbus OBDII integration, allowing it to read and log advanced engine data, including boost, timing, air/fuel ratios, and more, all accessible via the free JB4 PRO smartphone app. The JB4 Tuner comes preloaded with custom software and up to 8 maps, supporting various fuel levels including E85. It offers features like boost-by-gear control, fault code reading/deleting, and real-time gauge monitoring through the app. The tuner is not VIN-locked, allowing it to be removed without a trace and resold. It includes a rugged billet aluminum enclosure and comes with a 5-year warranty. Required fuel for performance gains is 91 octane or better. It is compatible with a wide range of Honda models, including 2016-Present 1.5L/2.0L turbo Civic and Civic Si, 2017-Present 2.0L turbo Civic Type-R, 2018-Present 1.5L/2.0L turbo Accord, 2017-Present 1.5L turbo CR-V, and 2016-Present 1.5L turbo HR-V.

MIA's Description

The JB4 Tuner is a plug-and-play Honda performance module designed to remap boost, timing, and fueling for optimal performance and reduced turbo lag. It connects to two accessible sensors in the engine bay and works with your factory DME tuning. The device features a 64mhz processor for high-speed sensor sampling and offers gains of up to 40hp and 50tq at the wheels on stock vehicles. It installs discreetly and is fully reversible, leaving no trace when removed.

Fitment

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Available on iOS & Android

Specifications

BrandJB4
Part NumberJB4-HONDA
CategoryIgnitions and Electrical

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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