For sale: APR ECU serial #AA for a 2002 Audi S4 tiptronic transmission. ECU is programmed with a 93 octane tune, making 318hp. Boost levels spike at 19, hold at 17PSI. Had ECU in for 3 months, but decided to trade my car in. Original cost of ECU is $600. Asking $375 + shipping. Comes with original box and step-by-step picture illustrated instructions. Installation takes about 15 minutes for a 60-70hp gain. Contact me if interested via phone 484-788-7166.

Compatible with 2001 Tiptronic L-box.