Unitronic is pleased to present it's plug and play Wideband ECU Conversion Harness. Designed to easily convert your vehicle's wiring harness to accept a wideband oxygen sensor and Bosch 1.8T Wideband ECU.Narrowband ECU's do not have the ability to provide dynamic lambda control therefore many tuners including Unitronic require converting to a wideband ECU for a better tuning experience and overall improved drive-ability. Including complete detailed instructions Unitronic's Wideband Conversion Harnesses are constructed using OEM connectors high quality 16awg and 22awg wire and feature pin-out labeling to ensure a easy and efficient installation. For non-VVT equipped engines a resistor is also pre-wired to ensure a CEL free operation. Guaranteed to always be in stock and priced competitively!