So, as I understand it, one of the things that dual plugging does right, is help eliminating pinging on crappy fuel.
I'm in texas, and I can't find 'real gasoline' to save my life. it's all 10% ethanol, and my airheads will only run right on high test, and even then, it's a dicey proposition. We're also mandated to go to 15% ethanol here shortly. All of this makes for lousy gasoline with low octane ratings.
So, I'm wondering if going back to dual plugging would be an improvement, given the state of gasoline in texas.