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Old 02-25-2001, 11:14 PM   #1
inpreza kid
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Post anyone heard of dynomax mufflers?

one was given to me today and i have no idea if its good or not. have you guys heard much about these mufflers? if so are they good or not? i can have it installed for $40 at a local muffler shop so not a great deal of money. its aluminum so it will rust out just as fast as stock one.
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Old 02-25-2001, 11:18 PM   #2
spt_impreza
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i dont think i have heard of it, but it sounds like a crappy tire special or something like that, i dont know???


spt
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Old 02-25-2001, 11:51 PM   #3
inpreza kid
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oh yea it says super turbo on the box. haha thats funny. must be some super muffler or something.

[This message has been edited by inpreza kid (edited February 25, 2001).]
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Old 02-26-2001, 01:38 AM   #4
Keiho
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Don't laugh too hard...Dynomax is actually pretty popular with the import crowd. They work, they're cheap, but well, they don't look that nice. The very first Stillen exhausts were made from Dynomax mufflers..
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Old 02-26-2001, 08:20 AM   #5
inpreza kid
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the thing with this muffler is its all aluminum. it might rust out pretty quick. then again i'm going turbo in a while anyways. by the way does anybody know how do these mufflers sound?
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Old 02-26-2001, 12:38 PM   #6
Keiho
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Not too bad I think..it probably won't be as loud as the straight throught mufflers...
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Old 02-26-2001, 06:12 PM   #7
direwlf
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They tend to have a fairly muscular sound. Very popular muffler with the camaro/mustang big block crowd. not much of a restriction, and usually sound pretty good. now, correct me if I am wrong, but aluminum is supposed to corrode slower than steel, not faster.
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Old 02-26-2001, 06:56 PM   #8
GTBGUY
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direwlf - I believe he's referring to Stainless Steel Aluminized will out last mild steel, but for maximum durability and minimal weight (that's affordable) would be stainless steel. If I had the $$ I'd get a custom exhaust made of Titanium!
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Old 02-26-2001, 07:23 PM   #9
inpreza kid
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jack. haha Titanium. i wish i had the money to do that too. well anyways. the muffler that i got is a super turbo or something like that. thats what it says on the box. i might put it on this weekend to see how it sounds. if i don't like it then i guess i can try to sell it for cheap. by the way is our stock mufflers stainless steel?
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Old 02-26-2001, 07:31 PM   #10
tulit
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I guess Titanium is OK if thats all you can afford. Personally, id go with something made of a Rhodium/Platinum alloy. Nice and strong, light and able to handle the heat.
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Old 02-26-2001, 08:41 PM   #11
direwlf
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If that stock muffler is stainless, it has got to be the worst stainless I have ever seen. My muffler was corroded around the welds and tips after less than 8 months on the car. Admittedly, it was surface corrosion, but still Think that is good old mild steel.
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Old 02-26-2001, 09:21 PM   #12
tulit
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the actual muffler is mild steel. the tip is stainless
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Old 02-26-2001, 11:01 PM   #13
inpreza kid
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i was wondering the same thing. my muffler is a rust box aready. scared if i put the dynomax on its even going to be even worse
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Old 02-26-2001, 11:39 PM   #14
markus
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All,

Take it from a guy who knows a thing or two about corrosion in pipig systems.

Stainless Steel as most people know is an alloy of iron, carbon, chromium, and nickel. Depending on the mixture of carbon, chromium and nickel, you get different types of SS. However, the major element used is still iron. Guess what? Iron oxidizes easily. If the incorrect welding rods or interpass temperatures are used, the crystaline structure of the SS is changed therefore allowing "rusting" to occur. There are few companies out there that know how to properly weld SS and usually industrial welders (in my biz) must have many years of experience on mild steel and special training before they are allowed to do commercial work on stainless.

IMO, as far as SS exhaust are concerned you get what you pay for. I believe that a good aluminized system can sometimes be better than a lousy SS system. Any uncoated mild steel system will be crap.

That being said, I've heard of dynomax but neither has been good or bad.
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Old 02-27-2001, 11:01 AM   #15
VinceS
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I have a Dinamax Turbo (2.25 inch) on my 99 RS and I can tell you it sounds awesome. It has a deep throughty (spelling??) sound. Sometimes during deceleration it burbles and spits (just like the WRC boys), yet it is not very "red flag to police bull" kind of loud.
It is not very esthetically pleasing, but a good tip covers that up. As far as I know it also comes in stainless, but with a lifetime warranty anyways who cares.
It's a great bang for the buck and I highly recommend it.
Vince

[This message has been edited by VinceS (edited February 27, 2001).]
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Old 02-28-2001, 12:30 PM   #16
rhung
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You get what you pay for. Dynomax, or Dronamax, mufflers are very popular and cheap but they really are nothing more than a glasspack muffler. Since it is a glasspack muffler, the stuffing will eventually wear out causing your car to become louder as time goes on. Also, on some cars, droning occurs but it depends on the ear and the car. The TurboFlo muffler (the one you have) incorporates some kind of S path for the exhaust so it's not a true straight through muffler.

However, they are cheap and seem to hold up very well in the minds of the domestic crowd. Not as good as Flowmasters, in some opinion, but a heck of a lot cheaper. They also make systems for some imports as well but the results are mixed in comparison to the more expensive HKS/Greddy/RSR etc systems.

Personally, I'd stay with the more expensive versions. But, if it's free, it doesn't hurt to try.

Ray
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Old 02-28-2001, 05:28 PM   #17
inpreza kid
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some guy at a muffler shop told me that it should give some decent power with very little noise. i'm probably not going to put it on for the fact thats its aluminum and it will rust pretty quick.
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Old 02-28-2001, 05:56 PM   #18
V6
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If you are not too picky, the OEM performance muffler made by Brospeed is also a good choice.
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Old 02-28-2001, 10:49 PM   #19
markus
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The Brospeed muffler is very heavy and doesn't really provide any better breathing characteristics over stock. The dealership in Edmonton wants something like ~C$450+ for it

In my opinion, you'd be better of buying an STi muffler from someone like Subaru Parts and get a JDM 60mm (~2.25") rear section that will sound better than the Brospeed and give better breathing and won't be as loud as a straight through.
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Old 02-28-2001, 10:55 PM   #20
direwlf
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I've got a stromung stainless steel muffler (dual tip) and it sounds wicked. Its pretty loud, but not so loud that it is obnoxious inside the car (my opinion). I've got the stromung stainless midpipe (2.25") sitting in my basement waiting to be installed, I'll let you all know what it sounds like once it is on
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Old 02-28-2001, 11:30 PM   #21
inpreza kid
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STI and stromung are pretty good mufflers. the spt/brospeed isn't bad for sound but like markus siad the e-town dealer wants a little over $450 for it. i kind of have my eye on the JC sports system. i think i'm getting ahead of myself. i might try out the dynomax muffler when snow melts so no rust to worry about. direwlf let us know how the stromung is for performance.
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Old 03-01-2001, 10:13 PM   #22
direwlf
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Getting the midpipe put on tommorow. I'll let you know if things get better and/or louder *EG*
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Old 03-02-2001, 07:08 PM   #23
direwlf
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Got pipe? I do Got my mid-pipe on today. Results: Feels more powerful low-to-mid range. Muffler, quieter than before, but with a more growly tone. I would highly recommend this to anyone who has already got a stromung muffler, or anyone who is looking at getting one to get teh midpipe at the same time. You won't regret it
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Old 03-02-2001, 08:22 PM   #24
markus
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Question

Warren,

Does your mid-pipe have a resonator on it?
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Old 03-02-2001, 09:31 PM   #25
direwlf
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Nope. Just mandrel bent goodness
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