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Originally Posted by CGSTL
I installed mine on my 2005 4.4 and all I really noticed was the growl. I tended to think the performance increase was an illusion based on the increased exhause note.
Mine now sits in the box in my garage.
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I will leave mine on for now, it looks cool and I do like the growling sound.
If I were you I will put that thing of Ebay, you'll sell it for sure.