Harness type overview

The best and most precise harnesses with no compromises. Fully customizable harnesses spanning from factory ECU replacement to fully terminated engine harnesses that incorporate any sensors or outputs your project could need.

Piggyback ECUs are one of the most cost effective ways to tune your car, by intercepting and adjusting signals coming from the factory ECU. These harnesses are sometimes all you need to tune a car, but if not used on the correct platform, they can cause unsafe feedback loops. To ensure you have the best experience, we only make these harnesses for certain vehicles. Want to learn more? Contact RAT Wire for a free consultation!