? Mythbusting: Which is more important Air-Fuel Ratio OR Ignition Timing?

This is something you need to know if you're chasing horsepower - which is more important - AFR or Ignition Timing? Today we are going to tackle this hotly debated topic the proper way - with a test vehicle, a chassis dyno, and some hardcore theory thrown in. Strap yourselves in - it's gonna be a bumpy ride!