Thermal Stealth INstalled....BUT!!!

wassup guys and gals
i finally have received and installed my Thermal Stealth.
when i was installing i also installed a FOcUZ High Flow CAT
the stealth sounds good, but at around 4500-6000 rpm i hear a TINGy kind of noise!!! sounds like what a EVO does on a RSX revs low then once it gets to said RPM it tings then sounds dies out.

NOw is this because i have the HIGH FLOW CAT? how much difference does a high flow CAT make when installing an exhaust on a N/A car? i know there is small/no HP difference, is it just sound differnce? and if so i should take it off, correct? OR is this something that the Stealth does? or will it go away?? i have spoken to several STealth owners before the install and was not made aware of this.

i have been told that there is kind of a Break in period for EXhausts and they get louder after a while.

does/did any0ne here have the same problem?

The exhaust sounds GREat at cruising speed and it loses its sound once u get over 6k rpm(a good thing since i normally rev out to redline but wont anymore since there is no noticeable sound) but as stated above it is tinging at 4500-6000 rpm.


Please HElp Guys.
thanks in advanced
Daniel