You should not have to re jet if all you do is pull the shelf out of the air box. It will give you more air, but not enough to lean out. Keep in mind, the colder it is, the more air you will draw so watch out for long stretches on a really cold day like 25 to 30 below zero(CELSIUS) I pulled the shelf out of my 900 and put a power breather on and only jetted up one. Power Breather= way more air. Two AC dealers told me that I really didnt even have to jet up with the power breather. I decided to anyways just to be safe. For more specifics just ask. Where do you ride?
Boom Of Manitoulin
Boom Of Manitoulin