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DGTune

OBD2B to OBD1 99-01 Conversion Jumper Harness – Honda & Acura Civic / Integra ECU Swap

OBD2B to OBD1 99-01 Conversion Jumper Harness – Honda & Acura Civic / Integra ECU Swap

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Regular price $49.00 USD
Regular price Sale price $49.00 USD
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Upgrade your Honda or Acura for tuning flexibility with the OBD2B to OBD1 Conversion Jumper Harness, designed for seamless ECU conversion on OBD2B vehicles. This plug-and-play jumper allows you to run a fully tunable OBD1 ECU in compatible Honda Civic, Acura Integra, and other OBD2B Honda/Acura platforms—no cutting or splicing required.

Built with high-quality automotive-grade wiring and OEM-style connectors, this harness ensures reliable sensor communication, clean signal transfer, and long-term durability. Perfect for enthusiasts running Hondata, chipped OBD1 ECUs, custom tuning, turbo setups, or engine swaps, this conversion harness is a must-have for serious performance builds.

Whether you’re converting for tuning access, performance upgrades, or ECU reliability, this jumper harness delivers a clean, professional installation that works right out of the box.

Key Features

  • Plug-and-play OBD2B to OBD1 ECU conversion

  • Compatible with Honda Civic, Acura Integra, and select Honda/Acura OBD2B models

  • Supports chipped OBD1 ECUs, Hondata, and custom tuning

  • OEM-style connectors for secure, factory-fit installation

  • No wire cutting or permanent vehicle modifications

  • Ideal for boosted, swapped, or performance-tuned builds

OBD2B (1999–2001 Models)

These vehicles use OBD2B wiring and ECU connector style.

Civic – OBD2B

  • 1999 Civic (all trims)

  • 2000 Civic (all trims)

Accord – OBD2B

  • 1999 Accord

  • 2000 Accord

  • 2001 Accord

Prelude – OBD2B

  • 1999 Prelude

  • 2000 Prelude

  • 2001 Prelude

Integra – OBD2B

  • 1999 Acura Integra

  • 2000 Acura Integra

  • 2001 Acura Integra
    (All trims including GS-R & Type R)

Trusted by enthusiasts. Built for tuners. Powered by DGTune.

Shipping & Returns

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. Returns not applicable to ECU Packages.

We also offer a 30-day re-tune deal if you want to modify your tune or just simply get another chip. Visit Re-Tunes & Adjustments below.

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, and in its original packaging.

Please inspect your order upon receiving and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

Re-Tunes & Adjustments

We have a 30-day re-tune & adjustment policy, which means you have 30 days after receiving your item to request a re-tune or adjustment for a fee.

After 30 days, you are required to purchase a new tune at full price.

To be eligible for a re-tune: Must be within 30 days of your original order. Your adjustments must be for the same engine that originally was tuned. Must fill out a new DGTuning Form. And must pay the fee via this link: Re-Tune & Adjustments

Product Disclaimer

IMPORTANT – LEGAL NOTICE AND CUSTOMER CERTIFICATION

All products, software, calibrations, services, technical assistance, documentation, and support provided by DGTune are STRICTLY LIMITED to use on closed-course racing vehicles or off-road vehicles that:


  • Are NOT registered

  • Are NOT licensed

  • Are NOT titled

  • Are NOT operated on public roads or highways

  • Are NOT classified as pollution-controlled motor vehicles

DGTune does NOT design, sell, market, authorize, recommend, encourage, assist, or support the use of any product or service on any vehicle subject to emissions regulations, including but not limited to vehicles governed by the United States Clean Air Act, EPA regulations, or any state or local emissions laws.

The use of any product, software, calibration, or service to disable, defeat, bypass, remove, alter, or interfere with emissions control systems on a pollution-controlled motor vehicle IS ILLEGAL under federal law and may result in severe civil and criminal penalties, including fines and enforcement actions.

DGTune makes NO representations, warranties, or assurances regarding the legality of any product or service for any specific vehicle, jurisdiction, use case, or application.

SOLE RESPONSIBILITY OF THE CUSTOMER

The customer is SOLELY AND EXCLUSIVELY RESPONSIBLE for:


  • Determining vehicle classification

  • Ensuring compliance with all federal, state, and local laws

  • Verifying lawful installation, configuration, and use

  • Any consequences arising from misuse, illegal use, or misrepresentation

CUSTOMER CERTIFICATION & ACKNOWLEDGMENT

By purchasing, downloading, installing, accessing, or using any product or service from DGTune, you expressly certify, acknowledge, and agree that:


  • The vehicle associated with this purchase is a racing or off-road vehicle not subject to emissions regulations

  • You will not use any product or service on a pollution-controlled motor vehicle

  • You will not operate any modified vehicle on public roads

  • You understand that misuse may violate federal and state law

  • You assume ALL legal, financial, civil, and criminal risk associated with use

LIMITATION OF LIABILITY

DGTune EXPRESSLY DISCLAIMS ALL LIABILITY for:


  • Illegal use

  • Improper installation

  • Misrepresentation by the customer

  • Regulatory violations

  • Fines, penalties, enforcement actions, or damages of any kind

Any use contrary to this notice is unauthorized, outside the scope of sale, and undertaken entirely at the customer’s risk.

NO ASSISTANCE FOR ILLEGAL USE

DGTune will NOT provide guidance, recommendations, troubleshooting, or support for any use that may violate emissions, environmental, or vehicle-operation laws.

If DGTune reasonably believes a product or service is being used unlawfully, service may be immediately terminated without notice, with no refund.

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