::::raises hand::::
I am experiencing the same thing...I have already spoken to Josh & Kyle and am in the works of trying a couple of last attempts at making this work...
To ADD to your problem (which I am experiencing all of them) when I finally got to clear the X area, the rear section - mainly where the two slip joint pipes bend upward to affix to the muffler - it began hitting against that black triangle brace!
This really sucks! It has me cringe when I drive the car! Whats worse is that 2k-3k hiss/rasp/rattle - whatever you want to call it is EXTREMELY audible from the outside and makes the car sound so ghetto!
Now, to be fair, both Josh and Kyle have been working with me to try and resolve this and once I try these new gaskets + following the instructions to the TEE - I will find out whether or not this works...
BTW - I see you have the Berk HFCs and I am sure your hearing the same exact sound as RCZ's sound in the video he just posted. I am using the test pipes and although the noise, according to my exhaust guy, is only audible (you can damn near FEEL it in the pipe) on the right side of the exhaust somewhere between the right-test pipe and the X joint. Its where the slip joint is on the right-hand side...So it has stumped us all.
I wasnt going to post this video but I think its OK now since I been working with Stillen and hopefully someone either knows what it is, or better yet, if we figure it out, it will save someone time and money to resolve/prevent it frm happening to them!
[YOUTUBEHQ]<object width="560" height="340"><param name="movie" value="http://www.youtube.com/v/R-ruIvnMha0&hl=en&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/R-ruIvnMha0&hl=en&fs=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="560" height="340"></embed></object>[/YOUTUBEHQ]