I have been having problems with the raspy ness In my g35.
I added Megan racing test pipes and a y pipe with greddy exhaust,and spending as much as I did I think it sounds like crap.
First had them take my stock resonator out and build a new single pipe
BIG mistake ,driving 20mph sounded like I was going a 100 on a Honda with big
mufflers .
I then put my stock resonator back on with quieted ALOT of the raspy ness
but it's still there when I'm at high rpms.
I need help choosing whether you just put my stock cats back on
Or get a bigger resonator?