i dont know everything has a reason... i read that too a while back.... its suppose to make switching gears more smoother and less jerking, due to the restriction...
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i dont know everything has a reason... i read that too a while back.... its suppose to make switching gears more smoother and less jerking, due to the restriction...
maybe, but look at this thing
http://socallifestyle.com/valve.jpg
it's so tiny, and it's just a little piece of plastic with a spring