What is it?
08-27-2006, 03:08 PM
#2
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Join Date: Jan 2005
Location: Canada
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there is a ring just inside the inlet of your turbo, when you take off the tube that clamps to the turbo, where it comes from the air box.you will see a trim ring like band inside the opening, held in by a c clip.doesn't do anything for power, just makes a little more noise,or whistle when on boost.