That perfect dyno pull doesn't capture the knock events at 3000rpm or AFR drift during daily driving. Continuous data monitoring reveals what's actually happening to your tune between dyno sessions.
Your dealership handed you the keys but forgot to mention the 5 gauges that determine whether your WRX lives or dies. Boost pressure, AFR, knock count, oil temp, and coolant temp tell you what's really happening under the hood when the fun starts.
A $300 tune that destroys your $8,000 engine isn't a bargain. Learn why proper AFR monitoring and knock detection during the tuning process can save your turbocharged build from expensive damage.