Catless header noise reduction - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

SlydwinderFT86 · 08-24-2016, 01:27 AM

Hey folks,

Has anyone found a good way to minimize the amount of noise from the catless head with an exhaust?

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renfield90 · 08-24-2016, 01:43 AM

Drive slow.

SlydwinderFT86 · 08-24-2016, 01:46 AM

That a given my commute is filled with lots of traffic.

I'm thinking of putting a muffler on the own front pipe to bring the noise down.

Any suggestions or alternatives?

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humfrz · 08-24-2016, 02:52 AM

Quote:

Originally Posted by SlydwinderFT86

That a given my commute is filled with lots of traffic.

I'm thinking of putting a muffler on the own front pipe to bring the noise down.

Any suggestions or alternatives?

Sent from my iPhone using Tapatalk

What type/kind of muffler do you have on it now..??

humfrz

FirestormFRS · 08-24-2016, 09:13 AM

If you're still on the stock exhaust from the header back.....it won't get much quieter than it already is.

SlydwinderFT86 · 08-24-2016, 11:36 AM

Invidia n1

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kev60625 · 08-24-2016, 12:11 PM

Quote:

Originally Posted by SlydwinderFT86

Invidia n1

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There's your problem, the n1 is insanely loud when you switch out other exhaust parts.

Should've researched more before buying the n1

wootwoot · 08-24-2016, 12:24 PM

A cat....

driftartist · 08-24-2016, 12:33 PM

the stock unit should do the trick..... /smfh

kch · 08-24-2016, 01:22 PM

N1 + catless header = bad time. You need a different catback. Stock works okay, but sounds a little farty with a catless header. I use the perrin 2.5" resonated and it's pretty reasonable.

SlydwinderFT86 · 08-24-2016, 01:25 PM

I hate to even consider this, but I was thinking to putting the flowmaster hush power muffler on the front pipe replacing the second cat.

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renfield90 · 08-24-2016, 02:37 PM

I have a catless header and a muffler delete. I don't see how any kind of muffler is too loud, but there's always the stock unit or you can keep the revs under 3.5k.

Or you can switch to a catted header. It's less than a 5hp difference and far more emissions-friendly. I would have done this myself if I wasn't building the car for competition, especially if noise was a concern.

08-24-2016, 01:27 AM	#1
SlydwinderFT86 Member Join Date: Oct 2014 Drives: 2015 scion frs Location: Bay Area California Posts: 13 Thanks: 0 Thanked 3 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Catless header noise reduction Hey folks, Has anyone found a good way to minimize the amount of noise from the catless head with an exhaust? Sent from my iPhone using Tapatalk

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08-24-2016, 01:43 AM	#2
renfield90 The Stig's German cousin Join Date: Mar 2013 Drives: 2013 FR-S Location: Tempe, AZ Posts: 1,071 Thanks: 140 Thanked 519 Times in 345 Posts Mentioned: 8 Post(s) Tagged: 2 Thread(s)	Drive slow.

08-24-2016, 01:46 AM	#3
SlydwinderFT86 Member Join Date: Oct 2014 Drives: 2015 scion frs Location: Bay Area California Posts: 13 Thanks: 0 Thanked 3 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	That a given my commute is filled with lots of traffic. I'm thinking of putting a muffler on the own front pipe to bring the noise down. Any suggestions or alternatives? Sent from my iPhone using Tapatalk

08-24-2016, 09:13 AM	#5
FirestormFRS Senior Member Join Date: Jul 2012 Drives: 2013 FR-S Location: Anytown Posts: 920 Thanks: 73 Thanked 643 Times in 302 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	If you're still on the stock exhaust from the header back.....it won't get much quieter than it already is.

08-24-2016, 11:36 AM	#6
SlydwinderFT86 Member Join Date: Oct 2014 Drives: 2015 scion frs Location: Bay Area California Posts: 13 Thanks: 0 Thanked 3 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Invidia n1 Sent from my iPhone using Tapatalk

08-24-2016, 12:24 PM	#8
wootwoot Senior Member Join Date: Jul 2012 Drives: FRS Location: Cali Posts: 1,558 Thanks: 188 Thanked 462 Times in 264 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	A cat....

08-24-2016, 12:33 PM	#9
driftartist Kurenai Samurai Join Date: May 2012 Drives: Red and manual Location: east bay,ca Posts: 794 Thanks: 186 Thanked 327 Times in 203 Posts Mentioned: 5 Post(s) Tagged: 1 Thread(s)	the stock unit should do the trick..... /smfh

08-24-2016, 01:22 PM	#10
kch Senior Misanthrope Join Date: Sep 2014 Drives: 2015 BRZ Series.Blue CWP Location: Seattle, WA Posts: 1,490 Thanks: 1,743 Thanked 1,169 Times in 645 Posts Mentioned: 20 Post(s) Tagged: 2 Thread(s)	N1 + catless header = bad time. You need a different catback. Stock works okay, but sounds a little farty with a catless header. I use the perrin 2.5" resonated and it's pretty reasonable.

08-24-2016, 01:25 PM	#11
SlydwinderFT86 Member Join Date: Oct 2014 Drives: 2015 scion frs Location: Bay Area California Posts: 13 Thanks: 0 Thanked 3 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I hate to even consider this, but I was thinking to putting the flowmaster hush power muffler on the front pipe replacing the second cat. Sent from my iPhone using Tapatalk

08-24-2016, 02:37 PM	#12
renfield90 The Stig's German cousin Join Date: Mar 2013 Drives: 2013 FR-S Location: Tempe, AZ Posts: 1,071 Thanks: 140 Thanked 519 Times in 345 Posts Mentioned: 8 Post(s) Tagged: 2 Thread(s)	I have a catless header and a muffler delete. I don't see how any kind of muffler is too loud, but there's always the stock unit or you can keep the revs under 3.5k. Or you can switch to a catted header. It's less than a 5hp difference and far more emissions-friendly. I would have done this myself if I wasn't building the car for competition, especially if noise was a concern.

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