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

SlydwinderFT86 · 08-24-2016, 12:27 AM

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

renfield90 · 08-24-2016, 12:43 AM

Drive slow.

SlydwinderFT86 · 08-24-2016, 12:46 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?

Sent from my iPhone using Tapatalk

humfrz · 08-24-2016, 01:52 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, 08:13 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, 10:36 AM

Invidia n1

Sent from my iPhone using Tapatalk

kev60625 · 08-24-2016, 11:11 AM

Quote:

Originally Posted by SlydwinderFT86

Invidia n1

Sent from my iPhone using Tapatalk

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, 11:24 AM

A cat....

driftartist · 08-24-2016, 11:33 AM

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

kch · 08-24-2016, 12:22 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, 12:25 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.

Sent from my iPhone using Tapatalk

renfield90 · 08-24-2016, 01:37 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, 12:27 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

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
catless header vs catless frontpipe	steveholt	Engine, Exhaust, Transmission	30	10-10-2017 07:13 PM
Catted vs resonated front pipe noise reduction difference	raven1231	Engine, Exhaust, Transmission	11	03-30-2017 10:20 AM
Gutted cat stock header vs aftermarket catless header NA application	stevo585	Engine, Exhaust, Transmission	8	04-04-2014 04:12 PM
making the exhaust noise tolerable at WOT and being catless.	BRZPDX	Engine, Exhaust, Transmission	24	01-27-2014 12:20 PM

08-24-2016, 12:43 AM	#2
renfield90 The Stig's German cousin Join Date: Mar 2013 Drives: 2013 FR-S Location: Tempe, AZ Posts: 1,066 Thanks: 140 Thanked 511 Times in 340 Posts Mentioned: 8 Post(s) Tagged: 2 Thread(s)	Drive slow.

08-24-2016, 12:46 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, 08:13 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, 10:36 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, 11:24 AM	#8
wootwoot Senior Member Join Date: Jul 2012 Drives: FRS Location: Cali Posts: 1,558 Thanks: 188 Thanked 461 Times in 264 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	A cat....

08-24-2016, 11:33 AM	#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, 12:22 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 1,168 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, 12:25 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, 01:37 PM	#12
renfield90 The Stig's German cousin Join Date: Mar 2013 Drives: 2013 FR-S Location: Tempe, AZ Posts: 1,066 Thanks: 140 Thanked 511 Times in 340 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.

User Name		Remember Me?
Password