Haltech Nexus S2/S3 Plug 'n' Play Adapter Harness VW/Audi 1.8T AWP x2 5 A4/A5/Allroad offers discerning enthusiasts

5 A4/A5/Allroad offers discerning enthusiasts measurable increases in horsepower and torque

Includes New Factory Subframe Bolts

you can trust that you're getting the best possible performance and value for your money

200CPI EU6 Racing Metal Catalytic Converter

meaning higher boost pressures can safely be used

Haltech Nexus S2/S3 Plug 'n' Play Adapter Harness VW/Audi 1.8T AWP x2 5 A4/A5/Allroad offers discerning enthusiastsIf you are using a factory harness and are after an easy ECU upgrade, take a look at Haltech Plug 'n' Play Adapter Kits. These adapters plug directly into your Haltech ECU and have a set of factory connectors on the other side which plug straight into the factory harness. A simple Haltech Plug 'n' Play product that allows you to be up and running in just a few hours. The quick start guide will walk you through installation of the Haltech Plug 'n' Play