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pull the seat, grab the thing sticking up and work it out. (ya can put it back if you do not like it) But, I do not know what it is in there for......can someone tell me why? 2 inches of the filter used? I do not understand all this........



I'll offer a guess. The snorkel probably does several things. It probably:

  • helps prevent dirt and debris from falling into the airbox
  • helps moderate intake pressure for a more consistent tune job coming from the factory, thus satisfying EPA requirements
  • reduces valve and chain noises


I'll venture another educated guess. I'd say pulling the snorkel is worth about 5 notches on the main jet scale. In other words, if you are running all stock with factory 120 mains, pulling the snorkel would allow you to run 125s. Keep in mind this is a comfortable guess. All disclaimers apply. The trick is to maintain an optimum air/fuel ratio. A quick google search puts that at 14.7 to 1.

If you pull the snorkel the bike breathes better, making it lean. But to get the full effect you need to unrestrict the exhaust end too. Installing less restrictive pipes makes it even leaner. Installing bigger jets brings the air/fuel mix back into balance. On top of that, your power is affected by other variables like humidity and barometric pressure. It's a black art, and hard to get exactly right without a dyno and exhaust meter. The seat of the pants method will get you in the ball park.

Regards,
Cody