UEL Headers - Page 2 - Subaru Enthusiasts Car Club of the Sierras

bigrobwoot · 2009-05-19, 08:09 AM

Quote:

Originally Posted by Dean

Here is a thought. Take off the axle back and see what it sounds like. It will likely be louder than you want, but will give you a feel for what the tone and burliness of louder is. If it is acceptable but needs to be muffled, a straight through can of some shape muffler and some fab work will deliver for cheap.

You could also drop the mid pipe for kicks.

If you don't like the sound, you have to look for UEL options.

That's probably the best idea. I see why you guys keep this old timer around

100_Percent_Juice · 2009-05-19, 09:13 AM

Yeah, someone needs to keep the rocking chair from flying away.

wrxkidid · 2009-05-19, 04:20 PM

Jeikun · 2009-05-19, 04:27 PM

Thanks for all the help and suggestions guys!

stichris · 2009-05-28, 09:36 AM

1

sperry · 2009-05-28, 09:45 AM

Quote:

Originally Posted by stichris

yea also u get a lil faster spool with after market uel headers as well

And spooling those pistons on a non-turbo car is important!

But seriously, I was under the impression that EL headers spool a turbo better, otherwise why would anyone bother making EL turbo headers?

stichris · 2009-05-28, 11:21 AM

lol my bad wasnt reading ahahah well my buddy put el on his 04 sti and he lost atleast 100 2 200 rpm of spool but then again he lives by the cobb ap like 70 % of subie owners do

sperry · 2009-05-28, 11:34 AM

Quote:

Originally Posted by stichris

lol my bad wasnt reading ahahah well my buddy put el on his 04 sti and he lost atleast 100 2 200 rpm of spool but then again he lives by the cobb ap like 70 % of subie owners do

I wonder if the EL headers increase lag but help high-end. W/o seeing a before/after dyno graph, it's hard to know.

Additionally, there are so many factors aside from the simply EL vs UEL aspect that would also affect spool. It could be likely EL headers hurt spool just because it means the exhaust gas cools more down the longer path... meaning that the EL headers should probably use a smaller diameter pipe than the shorter UEL headers to keep up velocity and protect the spool properties.

stichris · 2009-05-28, 11:44 AM

11

WRXlerate · 2009-06-12, 03:10 PM

Found this for some good reference
http://forums.nasioc.com/forums/showthread.php?t=601219

100_Percent_Juice · 2009-06-12, 04:53 PM

I would like to see some non-turbo header performance gain numbers.

Jeikun · 2009-06-12, 05:38 PM

I dont know exactly, but I do know that you lose a few horsepower on a UEL over an EL.

100_Percent_Juice · 2009-06-12, 05:55 PM

^Are you talking about turbo or N/A engines?

moose · 2009-06-12, 06:18 PM

From what I understood, you don't lose power with uel, you just don't get as much as the equal length header.

Kevin M · 2009-06-12, 06:31 PM

UEL vs. EL is less important than good collector design, which pretty much all the aftermarket stuff has.

Jeikun · 2009-06-12, 07:11 PM

Quote:

Originally Posted by Kevin M

UEL vs. EL is less important than good collector design, which pretty much all the aftermarket stuff has.

That's why when you switch to aftermarket UELs, you don't lose as much power. Or, as Moose (I'm sorry, I dont remember your name) said, you don't end up removing as much available power from the motor.

And we are talking about N/A motors.

2009-05-19, 09:13 AM	#27
100_Percent_Juice (40 percent vodka) Real Name: Joel Join Date: Oct 2006 Location: Reno, NV Posts: 4,446 Car: 2004WRX Class: Baby-Hauler/GroceryGetter	Yeah, someone needs to keep the rocking chair from flying away. __________________ "A power nap is when you sleep on someone who is weaker than you." - Dimitri Martin

2009-05-19, 04:20 PM	#28
wrxkidid EJ205 Join Date: Jan 2007 Location: Incline Village, NV Posts: 1,232 Car: 1999 Jeep Grand Cherokee Ltd. 5.7l Class: None :/ Cory, just put a 4g63 in it.	__________________ Mosey down the road.

2009-05-28, 09:36 AM	#30
stichris EJ22 Real Name: chris pearson Join Date: May 2009 Location: loyalton,ca Posts: 127 Car: 2004 wrb sti	1 Last edited by stichris; 2009-06-02 at 08:10 PM.

2009-05-28, 11:44 AM	#34
stichris EJ22 Real Name: chris pearson Join Date: May 2009 Location: loyalton,ca Posts: 127 Car: 2004 wrb sti	11 Last edited by stichris; 2009-06-02 at 08:10 PM.

2009-06-12, 03:10 PM	#35
WRXlerate EJ22 Real Name: John B. Join Date: May 2005 Location: Behind a brick wall. Posts: 471 Car: 02 Soccermom Wagon Class: "sleeper" Destroying V8 Egos 4 cylinders at a time	Found this for some good reference http://forums.nasioc.com/forums/showthread.php?t=601219 __________________ Stuff sold by the gram is always more exciting than stuff sold by the pound. JC

2009-05-19, 04:27 PM	#29
Jeikun EJ22 Real Name: Jake Niedle Join Date: Mar 2008 Location: Damonte Ranch Posts: 427 Car: 2006 WRX Limited Class: little to none	Thanks for all the help and suggestions guys!

2009-05-28, 11:21 AM	#32
stichris EJ22 Real Name: chris pearson Join Date: May 2009 Location: loyalton,ca Posts: 127 Car: 2004 wrb sti	lol my bad wasnt reading ahahah well my buddy put el on his 04 sti and he lost atleast 100 2 200 rpm of spool but then again he lives by the cobb ap like 70 % of subie owners do

2009-06-12, 04:53 PM	#36
100_Percent_Juice (40 percent vodka) Real Name: Joel Join Date: Oct 2006 Location: Reno, NV Posts: 4,446 Car: 2004WRX Class: Baby-Hauler/GroceryGetter	I would like to see some non-turbo header performance gain numbers. __________________ "A power nap is when you sleep on someone who is weaker than you." - Dimitri Martin

2009-06-12, 05:38 PM	#37
Jeikun EJ22 Real Name: Jake Niedle Join Date: Mar 2008 Location: Damonte Ranch Posts: 427 Car: 2006 WRX Limited Class: little to none	I dont know exactly, but I do know that you lose a few horsepower on a UEL over an EL.

2009-06-12, 05:55 PM	#38
100_Percent_Juice (40 percent vodka) Real Name: Joel Join Date: Oct 2006 Location: Reno, NV Posts: 4,446 Car: 2004WRX Class: Baby-Hauler/GroceryGetter	^Are you talking about turbo or N/A engines? __________________ "A power nap is when you sleep on someone who is weaker than you." - Dimitri Martin

2009-06-12, 06:18 PM	#39
moose EJ22 Join Date: Aug 2007 Location: Westminster, CO Posts: 446 Car: 1998 Subaru Impreza 2.5 RS Class: getting beat in DSP Pain doesn't affect me, I affect pain.	From what I understood, you don't lose power with uel, you just don't get as much as the equal length header. __________________ I hope that after I die, people will say of me: 'That guy sure owed me a lot of money!'"

2009-06-12, 06:31 PM	#40
Kevin M EJ22T Join Date: Sep 2003 Location: Reno Posts: 9,445 Car: '93/'01 GF6, mostly red Class: 19 FP	UEL vs. EL is less important than good collector design, which pretty much all the aftermarket stuff has. __________________ FWD is the new AWD

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