My cylinder is getting a stage 2 port right now, as well as the head bring rechambered. I'm about to order the toomey b1 kit off rmatv which does not come with an air filter. I just bought a k&n air filter a couple weeks ago because I heard they were the best. I could buy the kit off toomey for 20 bucks more and it comes with a UNI filter. Just curious what the best way to go for the blaster. Thanks guys!