And here are the results. It turns out that Eagle’s ESP Armor does, in fact, provide a very real benefit to engine power. Both horsepower and torque are improved throughout the rpm range. We chose a typical on-track rpm operating range of 4,000 to 6,000 rpm, and across that span the average torque improved by nearly 8 lb-ft and the horsepower did the same. And while it isn’t nearly as sexy as horsepower, we also noticed that the mirror-like surface created by the ESP Armor process helped maintain lower oil temps, which is also a definite plus.