Unequal vs. Equal length headers? - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

ExxelDistributions · 11-21-2014, 01:36 PM

I'm actually thinking of getting headers and can't decide to go with EL or UEL

Shark_Bait88 · 11-21-2014, 02:11 PM

Quote:

Originally Posted by revolutioN21

I'm actually thinking of getting headers and can't decide to go with EL or UEL

Is the boxer rumble worth it to you to have a less efficient design? That's pretty much the only thing you need to determine in this debate.

Edit: I'm not trying to bash UEL headers or the people who choose to buy them, simply stating what you need to determine in order to decide which you will buy.

MokSpeed · 11-21-2014, 02:50 PM

Quote:

Originally Posted by Digitalanalog

stock isnt el but it isnt uel either...

Wouldn't that technically make it UEL? If it's not equal length it can only be unequal length lol. Though it's not as drastic of a difference compared to an aftermarket UEL header.

As far as the difference goes UEL provides a nice strong mid range powerband. EL has way more potential in terms of gains for high power goals. This is why you see most FI kits use EL headers as well. The UEL provides the nice boxer rumble engine note. The EL gives more of a true 4 cylinder tuner car sound.

Foobar · 11-21-2014, 02:56 PM

Quote:

Originally Posted by Shark_Bait88

Is the boxer rumble worth it to you to have a less efficient design? That's pretty much the only thing you need to determine in this debate.

Edit: I'm not trying to bash UEL headers or the people who choose to buy them, simply stating what you need to determine in order to decide which you will buy.

I think the efficiency in design argument is moot in our platform. I suppose it makes a bigger difference for turbo applications, so if a turbo is in the equation, the efficiency of UEL vs. EL comes more into play.

I know on the other turbo Subaru platforms, EL can offer actual gains beyond margin of error.

Sent from my Nexus 5 using Tapatalk

Shark_Bait88 · 11-21-2014, 03:00 PM

Quote:

Originally Posted by Foobar

I think the efficiency in design argument is moot in our platform. I suppose it makes a bigger difference for turbo applications, so if a turbo is in the equation, the efficiency of UEL vs. EL comes more into play.

I know on the other turbo Subaru platforms, EL can offer actual gains beyond margin of error.

Sent from my Nexus 5 using Tapatalk

Yeah, that's why I noted that it really isn't much of a difference. If you're going FI, I'd definitely opt for EL. Otherwise, it's more a preference on sound. I like the EL sound better personally.

ExxelDistributions · 11-21-2014, 04:21 PM

Quote:

Originally Posted by Shark_Bait88

Is the boxer rumble worth it to you to have a less efficient design? That's pretty much the only thing you need to determine in this debate.

Edit: I'm not trying to bash UEL headers or the people who choose to buy them, simply stating what you need to determine in order to decide which you will buy.

its not the rumble im really into. im looking for something more gains and not what sound it makes.

Shark_Bait88 · 11-21-2014, 04:25 PM

Quote:

Originally Posted by revolutioN21

its not the rumble im really into. im looking for something more gains and not what sound it makes.

In that case I'd go EL. NA there won't be a significant difference, but if you ever go FI you will get better gains from EL.

rb6freak · 11-21-2014, 04:35 PM

While I prefer EL for the potential for maximum power, can't help but love the boxer rumble. Check out this fly-by sound by @mkivsoopra

[ame="https://www.youtube.com/watch?v=o2kJCyXb5r0"]BRZ PTuning turbo flyby - YouTube[/ame]

Poodles · 11-22-2014, 01:58 AM

Depends how the car is used.

EL is most peek HP, UEL will really help the torque dip.

cdrazic93 · 11-22-2014, 04:04 AM

Typical "I know there's been a ton of posts about this that I acknowledge, yet post a question anyway" thread.

weederr33 · 11-22-2014, 11:14 PM

When one says the EL are more efficient is that in the sense of mpgs or power production?

Andrew025 · 11-22-2014, 11:40 PM

Quote:

Originally Posted by weederr33

When one says the EL are more efficient is that in the sense of mpgs or power production?

Usually power.

torqdork · 11-23-2014, 12:01 AM

Quote:

Originally Posted by cdrazic93

Typical "I know there's been a ton of posts about this that I acknowledge, yet post a question anyway" thread.

Meet @Cop, you have something in common besides Junior.

Shiv@Openflash · 11-23-2014, 04:50 PM

FWIW, the UEL headers we tested made more power peak and more low end torque than the EL headers we tested. No only did it make power peak power, it also made more power in the 5500-6500rpm range which makes for a broader (less peaky) power curve. It surprised me too.

11-21-2014, 04:35 PM	#22
rb6freak Senior Member Join Date: Nov 2013 Drives: 23 BRZ Location: CA Posts: 539 Thanks: 545 Thanked 686 Times in 299 Posts Mentioned: 33 Post(s) Tagged: 0 Thread(s)	While I prefer EL for the potential for maximum power, can't help but love the boxer rumble. Check out this fly-by sound by @mkivsoopra [ame="https://www.youtube.com/watch?v=o2kJCyXb5r0"]BRZ PTuning turbo flyby - YouTube[/ame] __________________ SecondGen \| FirstGen \| Instagram \| YouTube

11-22-2014, 04:04 AM	#24
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)	Typical "I know there's been a ton of posts about this that I acknowledge, yet post a question anyway" thread. __________________ "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

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11-21-2014, 01:36 PM	#15
ExxelDistributions Senior Member Join Date: Apr 2014 Drives: 2014 FR-S 6MT Monogram Series Location: Los Angeles, Ca Posts: 514 Thanks: 29 Thanked 56 Times in 38 Posts Mentioned: 9 Post(s) Tagged: 1 Thread(s)	I'm actually thinking of getting headers and can't decide to go with EL or UEL

11-22-2014, 01:58 AM	#23
Poodles Senior Member Join Date: Oct 2013 Drives: 2015 Series.Blue Location: Fort Worth, TX Posts: 1,781 Thanks: 88 Thanked 781 Times in 481 Posts Mentioned: 16 Post(s) Tagged: 0 Thread(s)	Depends how the car is used. EL is most peek HP, UEL will really help the torque dip.

11-22-2014, 11:14 PM	#25
weederr33 Airborne at your service Join Date: Sep 2014 Drives: '17 BRZ Series.Yellow Location: El Paso, Texas Posts: 6,326 Thanks: 4,529 Thanked 5,587 Times in 2,929 Posts Mentioned: 33 Post(s) Tagged: 2 Thread(s)	When one says the EL are more efficient is that in the sense of mpgs or power production?

11-23-2014, 04:50 PM	#28
Shiv@Openflash Senior Member Join Date: Sep 2013 Drives: 2013 FRS Location: SF, CA Posts: 2,629 Thanks: 1,055 Thanked 5,469 Times in 1,494 Posts Mentioned: 605 Post(s) Tagged: 9 Thread(s)	FWIW, the UEL headers we tested made more power peak and more low end torque than the EL headers we tested. No only did it make power peak power, it also made more power in the 5500-6500rpm range which makes for a broader (less peaky) power curve. It surprised me too.

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