Ignitions and Electrical Computers, Chips, Modules and Programmers

Hondata

S300 Plug-in Module

$595.00

SKU: Hdta-S300us

In Stock
In Stock
Ships by Aug 2
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Hondata S300 is a plug-in module designed to enhance the functionality of OBD1 factory Honda Engine Computers (ECUs). This device vastly expands the capabilities of the stock ECU, enabling advanced features like forced induction tuning, comprehensive datalogging, and real-time parameter adjustments. Engine protection features are also included, providing an added layer of safety for modified engines. The S300 module is specifically designed for US market ECUs that have a rectangular frame. It integrates seamlessly with the factory computer, transforming its capabilities for performance applications. The V3 firmware version offers advanced tuning potential for both naturally aspirated and forced induction setups. Installation typically involves socketing the ECU to accommodate the S300 module. Users can connect the S300 V3 to a smartphone for enhanced monitoring and control. This system requires tuning to optimize performance for specific engine modifications, and startup calibrations are provided, though individual engine setups will necessitate custom tuning.

MIA's Description

The Hondata S300 is a plug-in module for the OBD1 factory Honda Engine Computer (ECU). It significantly expands the capabilities of the factory ECU, offering features such as forced induction support, datalogging, real-time parameter updates, and engine protection.

Fitment

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Specifications

BrandHondata
Part NumberHdta-S300us
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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