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Yes, I understand that it's just that I've heard auto manufacturers say that they can't go too lean because "The engine can't handle a instant detonation of the fuel at thoughs low a levels".
I was just using that as a base figure. I don't honestly believe that the a/f ratio will Chang one to one with the compression ratio, I was just stating that it can change with it. And quit substantially.(though I'm not 100% sure how much!!)
may I ask how inefficient running lean would make the catalytic converter??
I have my Roketa 150cc scooter running using the "vapor" system and I find it weird that to accelerate with it I have to close the intake(tell about half way, then it starts to drop in rpm's) and to idle it I have to open the intake.
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