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2 questions about the standard exhaust:

1. does your end can have a hole on the underside, as in a machined hole that should either be there or have a stud in it, near where the st steel end can section bolts onto the black section.

2. Has anyone heard of a tweak you can do by removing the end can, or maybe somewhere closer to the engine and opening a valve? You loosen a screw, hold the valve open, retighten the screw.. valve stays open or something? Someone who has an 05 mentioned this one to me the other day
 

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as jasmeet said, the holes there to let condensation and any rainwater out before it reaches the engine. About the second point, your mate could have been referring to a powervalve. But they're only on 2 strokes...
 

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2 questions about the standard exhaust:

1. does your end can have a hole on the underside, as in a machined hole that should either be there or have a stud in it, near where the st steel end can section bolts onto the black section.

2. Has anyone heard of a tweak you can do by removing the end can, or maybe somewhere closer to the engine and opening a valve? You loosen a screw, hold the valve open, retighten the screw.. valve stays open or something? Someone who has an 05 mentioned this one to me the other day
1. Yeah my Micron has that hole, wondered what it was for. lol.
 

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The hole in the botttem of the can is as said to let water out.
the water actualy comes from your engine, when you fire up condensation is formed as soon as the hot gases clear the engine into the exhuast pipe, if the hole was not there water would sit in the lowe part of your can & rot it. As soon as the engine & exhuast reach a good operating temp this condensation everates but reforms after your ride out as the engine cools down.
Have you ever noticed cars dripping water out of the end of there exhausts when stationary first thing in a morning in the traffic??? same thing with a bike, two strokes do not have the same problem as they have a coating of 2stroke oil in there exhaust, so they will not rot so easly.

Chris.
 
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