by crfsonly » Sat Jun 04, 2011 5:39 pm
welcome to the site! do you have the emissions equipment installed? this will cause some of the decel popping you are experiencing. most of us remove it with the applied racing block off kit. it's in stock in our online store. also, you should adjust your fuel screw to 2 turns out and then adjust it from there. lastly, make sure your header and mid pipe are sealed well.
ken