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Thread: S4 vacuum lines
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Old 05-16-2008   #4 (permalink)
BombFactory
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It will run fine with the canister removed, but you need to get a rubber plug for the vacuum side of the canister, as tape isn't going to cut it.

As for removing any other emissions equipment, I personally wouldn't bother. There are a few different schools of thought as to the emissions equipment which is comprised of the evap. canister and secondary air injection (SAI) (not sure if you have SAI on your bike). If you think about what each piece of equipment does, you will find that they don't affect performance. Again, some will disagree and swear that the emissions equipment causes all sorts of problems, but think about it for a second: 1. When the bike is not running the evap. canister allows expanding gas in the fuel tank to become trapped in it. As soon as the bike is started vacuum forces the gas fumes back into the engine to be burnt--no power loss or performance affect there. 2. (I'm trying not to get mixed up between the 955i system and TT600's on this one!) When the exhaust ports open they suck a reed flap open located in the exhaust runner of the head just before the header. This then sucks in air from the airbox and this fresh oxygen is mixed with the rich fuel mixture in the header. This allows the excess fuel to burn more so than it would without the added oxygen. Once again, this has no affect on performance from what I know about the system on a bike and on cars. So after this long explanation I will state my ‘green opinion’: If we can have powerful machines and still come up with new emissions tools to help save our children, grandchildren, and all other things on earth from being eaten by cancer or simply cooked but at the same time not hurt the machine’s performance, why not use the emissions equipment?
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Last edited by BombFactory : 05-16-2008 at 11:07 PM.
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