Like the title says, I'm selling my ECU with APR chip upgrade for $500 shipped to 48 states. This ECU will work with all 1997-99.5 A4's with the 1.8T nDBW engine, and can be coded for either manual or auto transmission. This chip comes with one program, and lifetime upgrades are available through APR. This chip makes a huge difference over stock programming. Check the APR website for more information. Feel free to email with any questions.