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Old 07-22-2009, 10:39 AM   #1
Defiant Autospeed
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Default Anyone put a silencer or small muffler on their EWG dump?

Just curious if anyone has seen anyone do this.

I dont want to, I love the sound of my EWG. But I was thinking.. (bad things happen when I do this)

If you have someone, who wants an EWG, and doesnt want quite as much of the noise, what would doing say a motorcycle muffler, or a short glass packed type muffler be like. I also know that bends knock sound down, so I also wonder if extending the dump down and venting it out behind the pass side front wheel would knock it down a bit.


For the purpose of this discussion, lets pretend that for whatever reason, routing it back into the turboback is NOT an option.
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Old 07-22-2009, 11:26 AM   #2
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I've heard of someone doing this (or at least planning on doing this) with a motorcycle muffler, but I don't remember seeing any results/videos.

Last edited by the suicidal eggroll; 07-22-2009 at 11:36 AM.
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Old 07-22-2009, 11:33 AM   #3
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confused so...

basically, you're trying to decrease in cabin noise as opposed to the noise it makes in general?
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Old 07-22-2009, 11:36 AM   #4
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Quote:
Originally Posted by penusai View Post
confused so...

basically, you're trying to decrease in cabin noise as opposed to the noise it makes in general?
He's brainstorming how to make the EWG quieter, period.
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Old 07-22-2009, 12:36 PM   #5
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i bought this as it was the smallest muffler i could find, havent gotten around to installing it yet. http://www.summitracing.com/parts/MPE-10444/
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Old 07-22-2009, 12:49 PM   #6
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Quote:
Originally Posted by the suicidal eggroll View Post
He's brainstorming how to make the EWG quieter, period.
I thought that as well, but then he said,

"I also wonder if extending the dump down and venting it out behind the pass side front wheel would knock it down a bit."

doesn't really make it quieter...
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Old 07-22-2009, 01:08 PM   #7
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Quote:
Originally Posted by penusai View Post
I thought that as well, but then he said,

"I also wonder if extending the dump down and venting it out behind the pass side front wheel would knock it down a bit."

doesn't really make it quieter...
That comment was immediately after:
Quote:
I also know that bends knock sound down
Just another way to make it quieter without having to buy a muffler, though I don't know how effective it would be
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Old 07-22-2009, 01:46 PM   #8
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the effect of the bends in pipe to the volume of the sound has to do with the speed the air leaves the pipe,

more bends, more resistance on air, lower exit velocity
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Old 07-22-2009, 02:17 PM   #9
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I have seen in tuner magazines where DSM owners have done this. They used a old school CBR slip-on I believe.

You could always runa dump tube further away from the engine bay following the stock exhaust into a dump, again allowing the exhaust gasses to slow down as mentioend above.
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Old 07-22-2009, 02:23 PM   #10
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Quote:
Originally Posted by the suicidal eggroll View Post
That comment was immediately after:


Just another way to make it quieter without having to buy a muffler, though I don't know how effective it would be
ah, i missed the part about bends...
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Old 07-22-2009, 02:31 PM   #11
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I've been contemplating this too as I'm probably going to need and EWG after I find that my new turbo boost spikes like mad! I was next to this Ford Lightning the other week and it was obvious he had an EWG.... Damn that thing was loud but I'm sure he had something comparable to a GT35 or bigger.

I wonder how much hp that Summit muffler adds? Anyone know!?
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Old 07-22-2009, 02:49 PM   #12
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Quote:
Originally Posted by scramjett View Post
I've been contemplating this too as I'm probably going to need and EWG after I find that my new turbo boost spikes like mad! I was next to this Ford Lightning the other week and it was obvious he had an EWG.... Damn that thing was loud but I'm sure he had something comparable to a GT35 or bigger.
They certainly are loud...
I have a friend with a modded Evo X that's very loud. If we get on it next to each other, as soon as my WG opens he can't hear anything anymore, not my exhaust, not his exhaust, nothing.

I was at the 1/4 mile track a while back and somebody was taking videos. Behind me in line was an 80s NA camaro with like 14:1 compression and no exhaust, it was LOUD. I lined up and took off, and as soon as my WG opened that was the only thing you could hear for the remainder of the video. It drowned out that camaro even when I was at the end of the track 1/4 mile away from the camera, my EWG was all you could hear in the video.

I like it personally...
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Old 07-22-2009, 03:03 PM   #13
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picture dual-tube catback.....Maybe extend the dump tube all along (next to) the exhaust pipe to the rear of the car. Have it end right before the muffler, maybe even place it sothat the exhaust gasses hit the back of the muffler can(not too close)...thats should quite it down alot but still be there to hear when it opens.

Should be cheap to do, no cutting existing setup
Easy as you already have a exhaust path out the back of the car. Could just spot weld or clamp it to existing exhaust pipes.

Not a bad idea...i think.
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Old 07-22-2009, 03:07 PM   #14
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got that video and what wg are you using? Egg
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Old 07-22-2009, 03:17 PM   #15
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Last edited by Dubstar112; 07-22-2009 at 03:31 PM.
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Old 07-22-2009, 03:44 PM   #16
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got that video and what wg are you using? Egg
Don't have the video, it's a Tial 44, dump tube points almost straight down and is about 1' long.
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Old 07-22-2009, 09:00 PM   #17
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There was another thread about this not that long ago.How about a Supertrapp/Kerker?
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Old 07-22-2009, 09:03 PM   #18
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wassamatta dave....ya ricermobile finally getting to ya?!?!?!?!?!!



ya bloody wanker.....supertrap makes a small muffler that'd work

a bloody muffler on the kiddie noise maker
jesus dave
next thing ya be doin is takin the bov off
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Old 07-22-2009, 10:47 PM   #19
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http://www.importdpsonline.com/vibra.../i-165132.aspx

Don't know if they ever or still make it but its worth a shot!?
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Old 07-22-2009, 11:09 PM   #20
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I extended the dump tube so that it ends about 10 inches back from the bend in the down pipe. Putting the sound behind you instead of in front of you makes a big difference in the cabin. Outside of the car it will still wake the dead and I have a lot of fun scaring people with it. I also feel it vibrate a little now that it's longer. I tried putting a cheap baffle in it but it didn't quiet it much and it didn't run the same so I took it out.

Last edited by slowmike; 07-22-2009 at 11:11 PM. Reason: spelling
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Old 07-23-2009, 12:01 AM   #21
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most bike mufflers are 1.5" - 1.75". i dont know what you guys run, but my dump tube is 2" thats why i got the magnaflow muffler. after searching for a couple weeks, it was the smallest one i could find.
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Old 07-23-2009, 03:49 AM   #22
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Quote:
Originally Posted by scramjett View Post
I've been contemplating this too as I'm probably going to need and EWG after I find that my new turbo boost spikes like mad! I was next to this Ford Lightning the other week and it was obvious he had an EWG.... Damn that thing was loud but I'm sure he had something comparable to a GT35 or bigger.

I wonder how much hp that Summit muffler adds? Anyone know!?

Lightnings are supercharged. I highly doubt he removed a supercharger that will put 600+ to the wheels to go with a turbo. Which means no turbo=no EWG since SCs arent driven by the exh. He likely just had a VERY loud exh and a VERY whiney supercharger. (raise the boost a little and do an intake and a Lightnings supercharger gets VERY loud)
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Old 07-23-2009, 03:52 AM   #23
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I was just thinking of extending it all the way to the back, then use a twin 3" in (would have to neck the EWG pipe up a bit) 4" out muffler. Obviously it would be a custom axleback to do this. That way you route it through the muffler like you had recirc'd it, but with none of the downsides of plumbing it back in.

But that would knock the sound down the same as plumbing it back in like normal.




Yeah I am not looking to do this on mine. I am just brainstorming out of my own curiosity.

Has anyone seen if flames come out the EWG dump? How badass would it be venting out behind the pass front wheel spewing flames at night Then you can melt your sideskirts AND rear bumper, instead of just the rear bumper.
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Old 07-23-2009, 07:39 AM   #24
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Quote:
Originally Posted by Defiant Autospeed View Post
Lightnings are supercharged. I highly doubt he removed a supercharger that will put 600+ to the wheels to go with a turbo. Which means no turbo=no EWG since SCs arent driven by the exh. He likely just had a VERY loud exh and a VERY whiney supercharger. (raise the boost a little and do an intake and a Lightnings supercharger gets VERY loud)

Maybe not a Lightning then, but for 100% certain a Ford F-150 all prettied up like one then, and it was certainly an EWG turbo... I could hear the guy 300+ft away while sitting in rush hour on I94. You tend to notice pickup trucks that sound like an F-16 spooling up on the tarmac.

But still, how much hp does that Summit muffler add!? Anyone!?
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Old 07-23-2009, 09:47 AM   #25
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Quote:
Originally Posted by Defiant Autospeed View Post
I was just thinking of extending it all the way to the back, then use a twin 3" in (would have to neck the EWG pipe up a bit) 4" out muffler. Obviously it would be a custom axleback to do this. That way you route it through the muffler like you had recirc'd it, but with none of the downsides of plumbing it back in.
I was trying to find a picture of an RX-7 that did something along those lines minus the dual in muffler. Maybe someone more skilled at Google will find it. Basically they routed the EWG all the way back and in the rear they had one big exhaust and the smaller EWG one next to it. The bends and length of pipe gave it plenty of time to shed some noise - not sure if they added a resonator or muffler in there as well.
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