hey,

a day or so ago, right before i was nearing 3k miles on the oil (more like 2750 but i would rather do it on a big number rather than trying to remember... that doesn't work too well), i noticed that all of a sudden my car was sounding different. dont know if it's all in my head or it really *does* sound different. i have stock manifolds and cats on the GMMG. it's sounded awesome, but now it almost sounds like it has a noticeable pulse at ~2-2.5k RPM. did the gmmg "break in" and change a little, or am i looking at a larger problem. there's a small leak i usually try to tighten every couple days. (no air tools so i gotta keep on top of it) it's small, but sounds like flapping paper. this sounds much deeper, but with the same rate that a run of the mill leak would sound like. make sense? perhaps a clogged cat or one that's getting ready to crap out? any suggestions or am i just hearing things... again. thanks for the help!

-J