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I come from rx7' s and rx8's. I always premixed with all my rotary motors. It just helped lube everything up. I know its a different motor but I've never had problems with my cat converter or injectors. If I added to much it just smoked a little as it burned off. My motors actually ran smoother after I started premixing. I saw what the inside looked like with premix amd a few that didn't. It was night and day. The only thing I would worry aboit is the direct injection system... The pressure of the entire system is a hell of a lot higher then tje cats I've used premix in.
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