downpipe exhaust wrap and noise - Subaru WRX Forum
 
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post #1 of 6 Old 08-11-2010, 03:32 AM Thread Starter
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downpipe exhaust wrap and noise

would an exhaust wrap on the downpipe reduce the sound levels of the exhaust? i know about the heat retention and keeping heat out of the engine bay benefits but wondering if there are any sound reduction benefits?

thanks

asking cause gonna buy a cobb catted downpipe but would like to keep sound down as much as possible
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post #2 of 6 Old 08-11-2010, 06:36 AM
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Sound as in ?

The spool or the rumble ?

It won't do either

It won't be much louder. The aftermarket catback mated up to the DP is the noisemaker.

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post #3 of 6 Old 08-11-2010, 10:03 AM
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Or if you're talking about sound through the piping, sure it will help, but the cobb is already a bit more on the quiet side due to the cast bellmouth.

If anything do it just to keep more heat out of the engine bay.

-Chris
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post #4 of 6 Old 08-11-2010, 10:37 AM
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no, exhaust wrap doesn't do anything for noise reduction

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post #5 of 6 Old 08-16-2010, 04:24 AM Thread Starter
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thanks guys..

i'm leaning more on not getting the wrap now from your infos above as i live in generally cool weather and free flowing traffic. n generally welcome more heat in winters.
i'll save a few bucks n save time not to wrap.

thanks
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post #6 of 6 Old 08-16-2010, 04:03 PM
 
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I must disagree. I am a big advocate of controlling underhood temps, and think wrapping the DP is very worthwhile, ni matter what climate you live in. I wrap mine to just past the bend (about 2/3) and yes there is a slight, but noticeable difference in the sound, however I run a non-cast DP, which is probably louder than the cast bellmouth style.
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