FREE Hole in the bottom of airbox mod:
(I have not done this myself but the principal is pretty simple.)
You remove your snorkle then the air filter.
Then cut a hole slightly smaller than the bottom of the air filter in the bottom of the airbox. Smaller in order for the air filter to not fall out the bottom later. You can put a piece of screen over the hole to keep crap out too. Cut the bottom of the filter out in the middle but leave the edges intact.
This gives you an open top and bottom for freer air flow through the filter into the carbs.
Some have just drilled several large holes instead of one large one and accomplished the same thing.
Then reinsert the air filter and zoom away. Rejetting will be necessary as you just increased your airflow quite a bit.
If you don't like the end results, just replace the filter with a new one that has a bottom to it, or just put a piece of thick plastic over the bottom hole, and you're back to square one.
