Hey guys, I'm new to the forum, and new to boasters in general. Recently bought a 2000 blaster that was almost stock(sleeved once). The piston was a little banged up, so I had to bore it .020 over. Also bought a used, aftermarket header pipe off of eBay, but not sure of the brand. It runs decent with the air boxx lid off, but still doesn't seem right, but with the lid on, it barely runs at all. It also doesn't want to idle on its own. Any ideas? I could use all the help I can get.