sometime ago i posted that i installed my fuel system and supercharger, and that i was getting some backfire noises. well, im not sure, but i think its getting worse. it only happens while in idle, and it sounds like its coming from the mid-pipe or further back towards the mufflers. sometimes its just a puff of high pressure air (causing it to blow smoke rings that is pretty cool!!), but sometimes it can be a shotgun blast. anyone else run into this issue? what do you think it could be? i checked all connections in the exhuast, and as far as ican tell, it's not gulping any excess air along the exhuast track. im confused.