I think it would be a little difficult to diagnose the issue based on your description of "squeeking". As an Authorized Dealer of Berk Technology products, we have never had this issue with any of their products that we have installed, nor had this issue with any of our customers that installed them themselves.
I feel you are being a little unfair with your Thread Title...you said it yourself, you are running the Stillen exhaust...why not title it Stillen Exhaust problem? Just sayin....
Find out what the problem is before pointing fingers at the manufacturer. It could be something completely different! "Squeeking" could be caused by MANY things!
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