IE Performance ECU Tunes For Audi B9/B9.5 2.9T RS5 & RS4
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IE's 2.9T ECU upgrade releases the full performance potential from your 2018-2023 Audi RS5 or RS4! Multiple stages are available to match typical bolt-ons and offer various fuel options and features while maintaining stock comfort and reliability. Enjoy a hassle-free install in minutes through the vehicle's OBD-II port, and get ready for supercar power from your RS-class Audi!
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