This question's for the folks that did their own exhaust and intake. Finally spent a little money on my bike, got a cobra exhaust, k&n filter and a PCIII. finally got everthing installed, installed the map on the PCIII. I've riden it for a couple of days and when i decelerate the exhaust will pop a couple of times. It really dosn't sound bad, but I thought the PCIII was supposed to elimenate any popping. I called power commander and the tech said I needed to plug the holes in the air box that go to the cylinders. so i plugged them and it still pops. If anyone has any experience in this, any help would be greatly appreciated.