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Old 05-05-2003, 05:00   #1 (permalink)
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Balance Tube or not

Is a balance tube recommended in a twin system?

What does it do?
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Old 05-05-2003, 05:15   #2 (permalink)
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yes, and I believe that it equalises the pressure between the pipes... but I may stand to be corrected. That's the way it was explained to me.
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Old 05-05-2003, 05:34   #3 (permalink)
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A dyno operator (whose opinion I doubt) said its not really necessary and that from a tuning point of view they are able to analyse what each bank is doing. This does seem to have some credence.
I can't see why it would matter if the pressure was different between the pipes. All the power is made in the engine and to some extent in the extractors but after that (asssuming the exhaust is not restrictive) what does it matter?
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Old 05-05-2003, 05:36   #4 (permalink)
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H or newer tech X pipe does same thing only better...Nascar and our V8 tourers use them these days...
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Old 05-05-2003, 05:48   #5 (permalink)
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Does the X pipe have any effect on the exhaust note compared to the H system?
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Old 05-05-2003, 06:14   #6 (permalink)
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i recently got a x pipe sytem that goes into a 3 inch single after the diff on my xd, and it's quietier than the 2 1/2 single it had and makes more power!
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Old 05-05-2003, 06:20   #7 (permalink)
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greetings all
the balance pipe will take a lot of the "crackle" out of the system when you back off the loud pedal
it will also make the vehicle a little quieter if you have to have an E.P.A. test
make the balance pipe as large as you can
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Old 05-05-2003, 06:27   #8 (permalink)
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Balance pipe also affects the torque area placement in the rpm range.

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Old 05-05-2003, 13:14   #9 (permalink)
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The balance pipe will cause the opposing cylinder bank to have some scavenging effect on the first bank and vice-versa.

This is all tied up in the art of obtaining more torque I'm told.

Jason
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Old 05-05-2003, 17:56   #10 (permalink)
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I can see that the alternating flow of the gases would have a scavenging (sucking) effect especially with a X pipe setup.

I will be talking to some performance exhaust builders about this before i get my 2.5" dual system built
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