How To Make An Audi S4 Perform Like An Audi RS4 In Five Seconds


What if there was a way to add about, oh, I don’t know, a bunch of horsepower and torque to a car that didn’t have it all to begin with. You wouldn’t have to turn a single wrench — or even know what a “wrench” was — and the only mechanical knowledge you’d need is knowing what an OBD port was and where to find it.

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