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Oct 22, 2009, 05:21 PM
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#1
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Evolving Member
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Drives: AS EVO X MR
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Modify stock exhaust to remove flapper
I would have sworn I'd seen a writeup on this, but cannot find it anywhere. Can anyone point me in the right direction? Anyone aware of a dyno comparison between stock and the flapper removed?
TIA
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Oct 22, 2009, 05:38 PM
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#2
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Last edited by atombomb33; Nov 2, 2009 at 09:16 AM.
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Oct 22, 2009, 06:39 PM
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#3
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How did you know where to cut? Looks like you nailed the locations perfectly.
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Oct 22, 2009, 08:02 PM
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#4
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nice gains considering what was done.
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PSU'11
2008 Evolution X
Apex Silver
Speed Circuit Wicked edition exhaust
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Oct 22, 2009, 09:17 PM
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#5
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Rock on dude! That's exactly what I was looking for.
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Oct 22, 2009, 09:49 PM
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#6
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what does it actually do?
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Oct 22, 2009, 11:37 PM
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#7
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How much louder did it make the exhaust?
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Oct 23, 2009, 12:04 AM
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#8
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Quote:
Originally Posted by 4G63punk
what does it actually do?
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Take a look here at the guts of the Evo X muffler: http://www.worksevo.com/store/produc...roducts_id=502
By removing that pipe, you bypass that convoluted internal routing and allow the exhaust to flow into the muffler and directly out the tailpipes.
Quote:
Originally Posted by Grip Master
How much louder did it make the exhaust?
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You can definitely tell the muffler is free flowing after the mod. Has a nice growl, but hardly louder than stock.
http://s159.photobucket.com/albums/t...t=100_3040.flv
That's a crappy vid clip with lots of BG noise, but you get the idea. Nice and subtle still.
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Oct 30, 2009, 09:58 AM
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#9
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Anyone know what the stock muffler is made out of? Stainless? Galvinized steel? Thanks
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EvoM's Resident "Booger Green Wheels" Fan Boy
08 WW Evo X GSR
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Nov 2, 2009, 08:09 AM
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#10
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Quote:
Originally Posted by Grip Master
Anyone know what the stock muffler is made out of? Stainless? Galvinized steel? Thanks
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Now a days I think all cars have stainless, they last a lot longer!
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Nov 2, 2009, 09:17 AM
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#11
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seems a lot of work to do by yourself.. prob would recommend a shop to do this lol
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Nov 2, 2009, 09:22 AM
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#12
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Quote:
Originally Posted by Grip Master
Anyone know what the stock muffler is made out of? Stainless? Galvinized steel? Thanks
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It's definitely stainless, but probably crappy T409 (since it was rusting already). I didn't have any stainless wire, so I just welded it back up with mild.
Quote:
Originally Posted by blueberryyumyum
seems a lot of work to do by yourself.. prob would recommend a shop to do this lol
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Not really... took me no more than 30 minutes to do the whole job. The muffler part itself takes 15-20 min at most. All you need is a sawzall and a welder. Easy peasy 
But then again I tackled a clutch install on the X in the same exact spot in my driveway... I'm just dedicated  and cheap.
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Nov 2, 2009, 09:55 AM
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#13
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noob question here, no CELs?
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Nov 2, 2009, 09:57 AM
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#14
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Shouldn't cause any CEL. You're pretty much home free after the back O2 sensor.
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Nov 2, 2009, 09:58 AM
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#15
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Mendo, just noticed you're in Dallas - Denver at Evo Dynamics is doing mine.
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