Y-Pipe / X-Pipe / H-Pipe / Dual-Pipe
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Joined: Sep 2009
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From: Morristown, NJ
Originally Posted by http://en.wikipedia.org/wiki/Aftermarket_exhaust_parts#Mid-pipe
The section of tubing between the catalytic converter(s) and the rear muffler on cars that have two parallel exhaust pipes. Performance mid-pipes often have a perpendicular connecting pipe or the pipes temporarily merge. This is to equalize the pressure in both exhaust pipes and keep the engine back-pressure as low as possible since back-pressure is detrimental to high end power.
* H-Style Pipe where there is a perpendicular connecting pipe, resembling the letter H
* X-Style Pipe or X-Pipe where the exhaust pipes temporarily merge, resembling the letter X
* H-Style Pipe where there is a perpendicular connecting pipe, resembling the letter H
* X-Style Pipe or X-Pipe where the exhaust pipes temporarily merge, resembling the letter X
Dual pipe - not sure what you mean by this, but I suppose it is possible for a car to run 2 pipes that never merge. I don't think you'd want to for the reason given above. Dual pipe could also mean a true dual exhaust with X or H pipe and 2 mufflers.
You might get better response if you shed some light on the context of your question - what are you looking to do?
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