13B X-Pipe
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Joined: Aug 2003
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From: NYC/T.O.
13B X-Pipe
Just thinking about running a long primary header system into a dual muffler setup. Would it better to collect it and then redistribute with a Y pipe, or would an X-pipe be more beneficial?
Lost You in the Rear View
Joined: Jul 2007
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From: Rocky Hill, CT
Assuming your car is NA, a single muffler setup is more benefitial unless you are using true dual headers/exhaust. A y-pipe causes more turbulance and actually causes more back pressure. A setup like that is just for looks. IMO i suggest a true dual setup as explained above. As far as the X-pipe goes (which could only be used with true duals), I doubt it would make a difference. I believe those are more for V-8s.
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Joined: Aug 2003
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From: NYC/T.O.
y-pipe doesn't cause as much back pressure as you would think....plus the dual muffler setup helps quiet things down for the same amount of power as a single, or the same amount of a noise as a single, but for more power.
It'll be a long primary into either a collector then a y-pipe, or an x-pipe. Ideas, anyone?
It'll be a long primary into either a collector then a y-pipe, or an x-pipe. Ideas, anyone?
Why do people keep repeating this? No they don't if done properly. If you build one really badly (and I mean REALLY badly) it will hurt. The fact that a Y pipe is in the system does not mean it causes more backpressure. More people need to go actually test things for themselves before passing on wrong information.
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Joined: Apr 2002
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From: Portland, OR
Well i noticed this thread while searching for information on H-Pipes to see if anyone has done this.
I'll go ahead and quote a book i have here when they talk about H-Pipes
now i'm not sure that rotaries would benefit very much from this but it does make since to me
I'll go ahead and quote a book i have here when they talk about H-Pipes
Originally Posted by How to Build and Modify Intake & Exhaust systems by Ben Watson
The Purpose of the "H" Pipe
Most exhust systems have an area where resonances and eddies build up in the exhaust gases. To reduce this build up on dual exhaust systems, it helps to install an "H" pipe between two sides of the exhaust. However installing the "H" pipe in the wrong place does more harm then not installing one at all. bad guesses do not count.
Locating the "H" Pipe
to determine where an "H" pipe is needed on your custom dual pipe exhaust system, paint the area between the catalytic converters and the mufflers with black lacquer. Run the engine at 3200RPM for several minutes. now inspect the painted area. where the lacquer has begun to burn, or has burned the worst, indicates the place where the H" pipe needs to be installed. install the pipe between the indicated hot-spots on the two sides of the exhaust
Most exhust systems have an area where resonances and eddies build up in the exhaust gases. To reduce this build up on dual exhaust systems, it helps to install an "H" pipe between two sides of the exhaust. However installing the "H" pipe in the wrong place does more harm then not installing one at all. bad guesses do not count.
Locating the "H" Pipe
to determine where an "H" pipe is needed on your custom dual pipe exhaust system, paint the area between the catalytic converters and the mufflers with black lacquer. Run the engine at 3200RPM for several minutes. now inspect the painted area. where the lacquer has begun to burn, or has burned the worst, indicates the place where the H" pipe needs to be installed. install the pipe between the indicated hot-spots on the two sides of the exhaust
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