Ever rev the engine, hit the kill switch and hear the unspent fire off with a large backfire thru the exhaust when you snap the kill back on? So if the fuel cuts off and comes on again, where is the pop?

this here is a pastime at many a moto gp race in spain/france, i cant understand how these dudes do this to their bikes, at full chat on the rev limiter or mulitple mini explosions from flicking on/off the kill switch as fast as they can to create ak 47 effect....oh to be young and reckless again

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So if the fuel cuts off and comes on again, where is the pop?

I used the valve guide example so you could see the gas as you can see the smoke. So as immediate as lift is, so is the input. So instant lift is instant gas that is left unspent and that vacuum holding that much/few as it does, where is the pop?

There is none because the PAIR is adding fresh air if the gas is still moving out the valve at 1000's of strokes per minute. Make sense yet? 600's/1000's/14's have PAIR?

And that Coz computer is universal from 1 to 12 cylinders. Very trick.

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