This chipped ecu is for a 2001-2001.5-2002 audi s4 with a AA box or L box. It has three programs stock, 91 octane, valet and it has the throttle body alignment. I have the full instructions from APR and proof of programs on the ecu. I'm looking to get $400 for it. I paid over $700 for it. Reverting back to stock. please pm me or for faster response email me at mlarkey19@aim.com. Thanks. I have pictures but for some reason I can't upload them. I'll send them via email upon request!