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Old 05-24-2011, 01:29 PM   #1
colorfull
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Default Resonator(s) on midpipe

My exhaust note is pretty raspy since I replaced my catback with single tip one from a 2005 WRX, with a custom non-resonated midpipe because of the rotated flange issue.
I want to get resonator(s) welded in to fix the raspiness, and I'm wondering if I should weld in 2 small ones (kinda like the OEM pipe) , or just one bigger resonator.
The raspiness is more pronounced at higher RPMs.

Any opinions/experiences on the subject?
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Old 05-24-2011, 01:52 PM   #2
RaceFaceXC
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The largest you can fit will make the most difference.
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Old 05-24-2011, 02:46 PM   #3
kero
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Yeah use (1) of the non baffled high flow resonators, that look something like this

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Old 09-22-2013, 08:48 AM   #4
shane_c
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I'm getting the OEM resonator removed soon because I'm tired of ice getting built up above it in the winter. I'm going to go with a round one in the hopes that it will melt and run off (the OEM one is flat on top).

Can I use something like the Magnaflow 10425 as a resonator? Or will it restrict flow too much because it's considered a muffler, even though it's straight through?
http://www.magnaflow.com/02product/s...=main&id=11268

I'll also be replacing the muffler with a Magnaflow at the same time.
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Old 09-22-2013, 09:29 AM   #5
RaceFaceXC
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Quote:
Originally Posted by shane_c View Post
I'm getting the OEM resonator removed soon because I'm tired of ice getting built up above it in the winter. I'm going to go with a round one in the hopes that it will melt and run off (the OEM one is flat on top).

Can I use something like the Magnaflow 10425 as a resonator? Or will it restrict flow too much because it's considered a muffler, even though it's straight through?
http://www.magnaflow.com/02product/s...=main&id=11268

I'll also be replacing the muffler with a Magnaflow at the same time.
A muffler is technically a resonator, but besides that anything straight through of 2.25" or larger should be less restrictive than the factory baffled resonator.

I currently use a magnaflow straight through resonator in a 5" OD with 2.25" straight through design. I think it was 18" long. It was hard to find a spot to tuck it into the under side so do some measuring if you want to maximize the space available.
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Old 09-22-2013, 09:37 AM   #6
Zulu-
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You might consider Spintech mufflers/resonators.

Tried a large Vibrant muffler then a turbo muffler prior to running two small Spintechs on an Acura TSX (full bolt-ons, full exhaust). Made a huge, positive difference over the others, great tone, quieted it down a lot.
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Old 09-22-2013, 07:08 PM   #7
shane_c
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or maybe I'd be better off with a magnaflow glasspack.
http://www.magnaflow.com/02product/02glasspack.asp
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Old 09-23-2013, 01:33 PM   #8
Bluefoton
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You could also put a Sti muffler, it has a quite a deeper tone than the WRX one.
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Old 09-23-2013, 03:32 PM   #9
Shecker141
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Quote:
Originally Posted by Bluefoton View Post
You could also put a Sti muffler, it has a quite a deeper tone than the WRX one.
I wouldn't get the sti muffler, I had one and it muffles the sound a lot, like more than you would think, I took it off and replaced it with a magnaflow muffler and it sounds way better, but it's whatever you prefer.
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Old 09-24-2013, 08:59 AM   #10
Bluefoton
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^ oh absolutely. Just saying it's -marginally- louder than a WRX one.
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Old 09-24-2013, 01:20 PM   #11
AMCjavelin74
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You could build your own. Basically adapt to a larger diameter pipe and back down to your standard exhaust size. This 'chamber' allows the pressure waves to dissapate a little. I don't know the engineering side of it (i.e. acoustic tuning of the thing) but good luck!
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Old 09-24-2013, 09:32 PM   #12
schrek1991
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Vibrant makes some good resonators you should check them out
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