Like a cheat code for your car: We investigate ECU tuning
Anyone who has followed the aftermarket automotive performance industry for long enough can tell you just how dramatically it has changed over the past few
Anyone who has followed the aftermarket automotive performance industry for long enough can tell you just how dramatically it has changed over the past few decades. What once required mechanical tinkering and a lot of know-how can now be done in mere minutes via an electric control unit (ECU), which can extract significant boosts in horsepower and torque from naturally aspirated, turbocharged, or supercharged engines.
In some ways, though, the process has become much more difficult. Just ask Alabama-based Audi Performance & Racing, more prominently known as APR. As modern vehicles become increasingly software-driven and OEMs continue to tighten security, the company has had to work harder each year to offer ECU tuning that delivers more power while staying within factory parameters for overall reliability.
It's a far more arduous process now than it was in the early aughts, when my own B5-generation Audi S4 was still fresh on the
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