hey everyone so I have been tackling noises in my stang for awhile and of course when you fix one noise, you are paranoid that everything else is worst case scenario. Let me get to the point. I have an 08 gt with a manual trans. I have cat deletes (cats cut out and straight pipe cut and welded in place on stock flanges untouched. I have an xpipe and two resonators. Im also cammed, and i have a jlt series 3 cai and a ford performance intake manifold. I have many other mods but i feel only these pertain to this thread. Anywho, when Im driving around and I reach about 2k rpms 3k rpms for a second or two I hear a tick or tapping noise. I know what a tick sounds like but I cant really call it a tick but thats the only way I can describe it. If I slowly reach those rpm ranges you cant hear a thing. Almost seems like exhaust resonance but I'd like a second opinion. It sounds almost like theres a rattling noise/ tapping or even a tick noise. Everyone that has heard my car says its just exhaust resonance. Doesnt do it at idle or revving in neutral. All connections are tight also. You cannot hear it inside the cabin. Sounds great on the dyno too. And of course at idle with the cams. If you just get in 3rd gear and punch it you never hear a thing. It seems you can only hear it most if youre next to a wall or something. Maybe Im just paranoid but in any case a second opinion would be good to hear. Im positive its exhaust resonance of some sort because I didnt hear it until I got my cats deleted. If this is a normal thing what causes that to happen? Im jsut perplexed by the whole idea.