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Flapper in stock exhaust?

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Old Nov 13, 2004 | 11:27 AM
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EVIL_EVO_VIII
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From: Lake Mary,FL
Flapper in stock exhaust?
Where is the flapper on the stock exhaust and how do you remove it? HAs anyone done this before? Thanks
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Old Nov 13, 2004 | 11:51 AM
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From: DTX
the search button is your friend. here ya go https://www.evolutionm.net/forums/sh...ad.php?t=98237
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Old Nov 13, 2004 | 11:53 AM
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I know WORKS does a muffler mod where they gut it and provide a new flow path and weld it back up for a stealth stock look. There's a diagram of the stock muffler somewhere.
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Old Nov 13, 2004 | 12:23 PM
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From: Turkey Town (Gobble-Gobble)
flap is just as he pipe enters the muffler... you can see it it opens as higher volumes of air enter the muffler to bypass the chambers... just another useless idea from mitsubishi
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Old Nov 13, 2004 | 12:54 PM
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I think the reason for the flap was for more low end torque. It creates backpressure when out of boost and then opens when more flow is sent through.
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Old Nov 13, 2004 | 01:01 PM
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From: DTX
Originally Posted by SinCityEvo
I think the reason for the flap was for more low end torque. It creates backpressure when out of boost and then opens when more flow is sent through.
yep
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