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Discussion Starter #1
Hey guys,
im going to be looking into buying a downpipe and i was wondering if their is actually a sound difference between different downpipes ( High flow Catted downpipes)? or if it really only matters what catback you have.

Thanks Tom
 

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Good news, everyone!
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3,856 Posts
Catbacks are what control the sound of the exhaust. Downpipes may change the pitch a bit, but it's the catback that is responsible for the overall sound.

So short answer, no.
 

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Captain James of the SS Impreza has gone down with
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Catbacks are what control the sound of the exhaust. Downpipes may change the pitch a bit, but it's the catback that is responsible for the overall sound.

So short answer, no.
Pretty much this. You would notice a difference in sound if you already have a catback and then put on a down pipe. Other than that, you shouldn't notice too much of a change.
 

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Master Baiter
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Catless downpipe will make the exhaust raspier / turbo spool louder than a catted alternative.
 

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and the Funky Bunch
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I've only ever done downpipe on my previous cars, never touched a catback, and I always noticed a change in the tone. It didn't make it hardly any louder, but the sound did change. Now, that was a GTP and a RSX-S, not WRXs.
 

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right now i have a catback twin tip on. ill record the sound from that then when i do the uppipe and downpipe install then take another video and post how the sound pitch changes
 

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Friendly Neighborhood Spider-Admin
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I've only ever done downpipe on my previous cars, never touched a catback, and I always noticed a change in the tone. It didn't make it hardly any louder, but the sound did change.
This. I've run downpipe+stock catback on many occasions (doing it right now, actually), and it makes the exhaust tone louder, and much more raw. Lots of pops, burbles, etc, plus I can really hear my spool up.
 
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