Thanks to a new stand-alone ECU from the tuner, ABT Sportsline has taken the Audi RS4’s 2.9-litre twin-turbo V6 from 444bhp to just over 500bhp, with the option to increase it to almost 530bhp ...
Watch as the BMW M3 takes on the Audi RS4 in a thrilling 1/4 mile drag race! Who will dominate in this high-speed ...
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