Quote:
Originally Posted by Texas F1
Neil, no, I'm not referring to the cats. What I was trying to describe earlier is what appears to be a restriction in the stock exhaust pipe immediately downstream from the flange where the cat-back portion connects to the secondary cat and resonator section. If you look at the diagram of the stock exhaust that Nate posted on the other thread, it's just past the dashed line that separates the portions of the system. It's hard to see from the diagram, but it is noticeable when you look at the actual pipe.
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OK, I suspected that you would have referred specifically to the secondary cats if that was your concern.
Since the constriction is behind both the secondary cats and the resonator, it would be the rearmost section of the exhaust -- entailing the single pipe running to the muffler -- that would need to be replaced in order to "free-up" the system.
Neil