Ignitions and Electrical› Computers, Chips, Modules and Programmers

Hondata

S300 Plug-in Module

$590.00

SKU: Hdta-S300us

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Hondata S300 is a plug-in module designed to expand the capabilities of the factory OBD1 Honda Engine Computer for manual transmission vehicles. It offers features such as forced induction support, data logging, real-time programming, and engine protection.

The S300 utilizes SManager software for tuning and data logging and is designed, manufactured, and assembled in the USA. It is compatible with Windows XP, Vista, and 7.
Show original supplier 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.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandHondata
Part NumberHdta-S300us
CategoryIgnitions and Electrical
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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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