Unequal Length Header Noise - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

fuse614 · 07-27-2014, 04:19 PM

So I just installed my Borla UEL Header yesterday and torqued down everything (gaskets, bolts evenly) and now when I accelerate I hear this "Wooshing" noise when accelerating? has anyone ever had any experience with this issue with installing UEL headers in general (Borla, JDL, OFH, Revworks etc..)?

cdrazic93 · 07-27-2014, 04:49 PM

define "woosh". Like turbo woosh or supercharger woosh?

Since Borla has a bad rep with their quality of products I would go ahead and double check their welds.

fuse614 · 07-27-2014, 05:07 PM

Quote:

Originally Posted by cdrazic93

define "woosh". Like turbo woosh or supercharger woosh?

Since Borla has a bad rep with their quality of products I would go ahead and double check their welds.

Yeah it sounds like a Turbo Woosh.. like a rush of air when on throttle

cdrazic93 · 07-27-2014, 05:33 PM

Quote:

Originally Posted by fuse614

Yeah it sounds like a Turbo Woosh.. like a rush of air when on throttle

I'd check welds. Sounds like a leak somewhere.

youcantseeme24 · 07-27-2014, 06:57 PM

I know what your talking about I have a rev works header. It does sound kind of like an exhaust leak but I was told its because of the thinner metal used......Im sure guys will chime in on this.

Malt · 07-27-2014, 07:00 PM

Quote:

Originally Posted by fuse614

Yeah it sounds like a Turbo Woosh.. like a rush of air when on throttle

Both my borla uel and OFH make that sound. Confirmed no exhaust leak on both setups from an exhaust shop multiple times. Its just a side effect of going catless, no heat shielding, and thinner gauge metal.

unsurety · 07-27-2014, 07:27 PM

Is it sort of similar to what a cold air intake sounds like?

What I really want to know is, is it a good sound, bad sound, or neither really?

fuse614 · 07-27-2014, 07:27 PM

Thank you all for your fast responses. Im guessing the best way to eliminate that sound is to use header wrap + sound tube delete or sound tube delete.. ill give that a shot and update you guys when I have the chance.. But that "wooshing" sound is not there at engine idle..

fuse614 · 07-27-2014, 07:33 PM

Quote:

Originally Posted by unsurety

Is it sort of similar to what a cold air intake sounds like?

What I really want to know is, is it a good sound, bad sound, or neither really?

Yes its similiar to a cold air intake sound but IMO it doesnt sound bad or good.. The sound I was expecting for this upgrade is a CLOSED TIGHT system where the only sound should be the engine and rumble from the exhaust.. But maybe because I have the sound tube Im hearing all the noises in the engine bay.. but ill ride with this for a few days and hopefully everything will clear up if not then ill use header wrap and do a sound tube delete..

zoth · 07-27-2014, 08:14 PM

Quote:

Originally Posted by fuse614

Yes its similiar to a cold air intake sound but IMO it doesnt sound bad or good.. The sound I was expecting for this upgrade is a CLOSED TIGHT system where the only sound should be the engine and rumble from the exhaust.. But maybe because I have the sound tube Im hearing all the noises in the engine bay.. but ill ride with this for a few days and hopefully everything will clear up if not then ill use header wrap and do a sound tube delete..

Have that too, I really think is the sound of exhaust air rushing out. Every time I go under the cat to do some work I always check for leaks and nothing.

B-R-Z · 07-27-2014, 08:25 PM

How do these uels sound? Is the rumble achieved worth the cost?

s2d4 · 07-27-2014, 08:33 PM

Quote:

Originally Posted by B-R-Z

How do these uels sound? Is the rumble achieved worth the cost?

Absolutely and you get performance to boot.

imho people with only cbe and NA are just as bad as ricer civics with fart cans.

unsurety · 07-27-2014, 08:57 PM

Quote:

Originally Posted by s2d4

Absolutely and you get performance to boot.

imho people with only cbe and NA are just as bad as ricer civics with fart cans.

But the UEL I want takes 1.5-2 months to arrive at peoples' doorsteps

I'm wondering if I should just get the Tomei... looks like solid quality. The wait is probably much less than the other popular headers.

Kronos · 07-27-2014, 08:57 PM

Haha I kinda agree about cbe+na owners. All subjective tho.

I'm putting a UEL header on my stock exhaust soon. Its the exhaust piece that nets the most gains And it's cheaper than a cbe too. Win win.

Edit: Plus I think the UEL sounds nice and refined on the stock exhaust for what I've seen

07-27-2014, 04:19 PM	#1
fuse614 Member Join Date: Apr 2014 Drives: 2014 FRS Whiteout Location: Hayward, CA Posts: 32 Thanks: 7 Thanked 7 Times in 7 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Unequal Length Header Noise So I just installed my Borla UEL Header yesterday and torqued down everything (gaskets, bolts evenly) and now when I accelerate I hear this "Wooshing" noise when accelerating? has anyone ever had any experience with this issue with installing UEL headers in general (Borla, JDL, OFH, Revworks etc..)? __________________ 2014 Whiteout FRS Snowflake - Mods: Borla UEL, OFT, Nameless Axleback

07-27-2014, 04:49 PM	#2
cdrazic93 Junior Join Date: Aug 2013 Drives: a car Location: Probably at school Posts: 4,341 Thanks: 3,184 Thanked 2,512 Times in 1,502 Posts Mentioned: 20 Post(s) Tagged: 0 Thread(s)	define "woosh". Like turbo woosh or supercharger woosh? Since Borla has a bad rep with their quality of products I would go ahead and double check their welds. __________________ "Ah! What music! They could have never imagined, those pioneers who invented the automobile, that it would posses us like this, our imaginations, our dreams. Men love women, but even more than that, men love CARS!"-Lord Hesketh

07-27-2014, 07:27 PM	#8
fuse614 Member Join Date: Apr 2014 Drives: 2014 FRS Whiteout Location: Hayward, CA Posts: 32 Thanks: 7 Thanked 7 Times in 7 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Thank you all for your fast responses. Im guessing the best way to eliminate that sound is to use header wrap + sound tube delete or sound tube delete.. ill give that a shot and update you guys when I have the chance.. But that "wooshing" sound is not there at engine idle.. __________________ 2014 Whiteout FRS Snowflake - Mods: Borla UEL, OFT, Nameless Axleback

07-27-2014, 08:57 PM	#14
Kronos Senior Member Join Date: May 2013 Drives: Asphalt FR-S MT Location: St. Louis MO Posts: 352 Thanks: 324 Thanked 126 Times in 82 Posts Mentioned: 5 Post(s) Tagged: 1 Thread(s)	Unequal Length Header Noise Haha I kinda agree about cbe+na owners. All subjective tho. I'm putting a UEL header on my stock exhaust soon. Its the exhaust piece that nets the most gains And it's cheaper than a cbe too. Win win. Edit: Plus I think the UEL sounds nice and refined on the stock exhaust for what I've seen

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07-27-2014, 06:57 PM	#5
youcantseeme24 Senior Member Join Date: Aug 2012 Drives: 2013 subaru brz Location: United States Posts: 136 Thanks: 102 Thanked 42 Times in 29 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I know what your talking about I have a rev works header. It does sound kind of like an exhaust leak but I was told its because of the thinner metal used......Im sure guys will chime in on this.

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