I'm guessing thats the HP101 , 3.77 percent oxygen ?
Man, please tell me more about your results with that?
Thinking of trying it on the Duster's 511.
Any problems with hurting pumps, carbs , lines etc?
If YOUR loving it, i'm thinking of trying it even though 100 octane lost power on the dyno, but thats a dry room, no air flow through a hood scoop etc.
Plugs look good i'm assuming?
Slight jetting change????