Does the intake become audible after uel header intall? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

WhenzLunch · 02-15-2016, 01:37 AM

I can hear a hiss sound from my engine after 4000rpm. Is that the intake or header leak

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cdq85 · 02-15-2016, 09:42 AM

it's a normal sound. metals are thinner and there is no shielding like on your stock head. just enjoy !!

go_a_way1 · 02-15-2016, 10:55 AM

+1 to above aftermarket headers have thinner pipe walls and that = more NVH

JDM4E · 02-15-2016, 11:51 AM

Does coating or wrapping (not a fan) helps? Also I heard that Tomei or what makes thicker piping. I am a bit worried about that.

WhenzLunch · 02-16-2016, 12:04 AM

Quote:

Originally Posted by cdq85

it's a normal sound. metals are thinner and there is no shielding like on your stock head. just enjoy !!

OK good, I enjoy the sound very much. I was just wondering what the sound was..

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kch · 02-16-2016, 01:11 PM

Quote:

Originally Posted by JDM4E

Does coating or wrapping (not a fan) helps? Also I heard that Tomei or what makes thicker piping. I am a bit worried about that.

Coating doesn't help. Not sure about wrapping, but I doubt it. And as far as I've noticed, Tomei headers make the same noise.

PandaSPUR · 02-16-2016, 01:15 PM

The massive heat shield around the stock headers is probably whats blocking the noise. I doubt thicker/thinner piping would have much to do with it. Air gaped/isolated mass is what would block out noise.

FRSBRZGT86FAN · 02-17-2016, 05:45 PM

Quote:

Originally Posted by JDM4E

Does coating or wrapping (not a fan) helps? Also I heard that Tomei or what makes thicker piping. I am a bit worried about that.

Quote:

Originally Posted by kch

Coating doesn't help. Not sure about wrapping, but I doubt it. And as far as I've noticed, Tomei headers make the same noise.

Wrapping apparently helps....

Luftwaffel · 02-17-2016, 08:13 PM

Quote:

Originally Posted by kch

Coating doesn't help. Not sure about wrapping, but I doubt it. And as far as I've noticed, Tomei headers make the same noise.

My Tomei UELs are definitely a thicker gauge steel and have far less of the airy/raspy noise. My buddy's 1320 headers? Not so much.

02-15-2016, 01:37 AM	#1
WhenzLunch Member Join Date: Jan 2015 Drives: 2015 Subaru BRZ Location: Los Angeles Posts: 50 Thanks: 1 Thanked 10 Times in 7 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Does the intake become audible after uel header intall? I can hear a hiss sound from my engine after 4000rpm. Is that the intake or header leak Sent from my ONE A2005 using Tapatalk

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02-15-2016, 09:42 AM	#2
cdq85 Senior Member Join Date: Dec 2014 Drives: 2013 Raven FR-S Location: Greensburg, PA Posts: 249 Thanks: 107 Thanked 285 Times in 113 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	it's a normal sound. metals are thinner and there is no shielding like on your stock head. just enjoy !!

02-15-2016, 11:51 AM	#4
JDM4E Senior Member Join Date: Dec 2014 Drives: Honda Accord Euro Location: Europe Posts: 204 Thanks: 251 Thanked 54 Times in 38 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Does coating or wrapping (not a fan) helps? Also I heard that Tomei or what makes thicker piping. I am a bit worried about that.

02-16-2016, 01:15 PM	#7
PandaSPUR PandaPandaPandaPandaPanda Join Date: May 2014 Drives: 2015 BRZ Limited CWP Location: New York City, NY Posts: 1,432 Thanks: 776 Thanked 697 Times in 438 Posts Mentioned: 12 Post(s) Tagged: 1 Thread(s)	The massive heat shield around the stock headers is probably whats blocking the noise. I doubt thicker/thinner piping would have much to do with it. Air gaped/isolated mass is what would block out noise.

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