MY truck my sig. on the stock downpipe under the truck theres about a foot of it thats an inch bigger the the rest like an expansion chamber or something, its all heat wrapped, so i cant tell, anyone know???:dunno:
My 03 had I believe it was called a resignator in the downpipe. It helps take out some of the drone and whistle the 03 turbo creates. I know when I removed my exhaust and put on aftermarket the whistle was crazy loud but you will get use to it.
That's correct. All it is for is to cut down on some of the whistle that the 03 turbos make.
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