The engine ran great throughout the entire dyno session. We found that running a total ignition advance of 36 degrees, along with No. 75 primary jets and AU metering rods for the secondaries, yielded the best horsepower and torque results. Notice the exhaust system. Some guys get great horsepower numbers by running race gasoline along with huge race headers and open exhaust, but we ran all of our tests with our Cyclone headers, through the mufflers and on 92-octane pump gas! Our horsepower figures are real-world numbers.