Uel vs el which headers do you have and why? - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

wrxgoose · 05-14-2013, 09:12 PM

I went with UEL, because boxer moters deserve the burble. Doesnt sound right to me otherwise

WolfsFang · 05-14-2013, 09:14 PM

I went with Borla UEL since it produced the best rumble in my opinion.

Nezz · 05-14-2013, 09:25 PM

There's some nice EL headers but it's worth noting they do a little less against the "dip" and more for the peaks. It's honestly a non issue for me-- the Silvia is fairly cammy and won't respond properly below 4,000 RPM anyway so I'm kinda used to a peaky motor, the dip doesn't bother me.

I'm going to go EL for the sound, Porsche style bark. But, that's me. Wait for more header dynos for salient information.

youcantseeme24 · 05-14-2013, 10:08 PM

best performance is an equal length header 90% of the time....manufactures will even tell you that. Correct me if im wrong but isnt the the whole reason they had an Uel header on the ej25 was to fit the turbo in how they wanted correct?

ATL BRZ · 05-14-2013, 10:11 PM

JDL UEL for me. Because Subaru.

Also because torque bump (with JDL UEL header, E85 tune, intake, headerback)

Not my car or my dyno, still waiting on my header. It's @Simmons BRZ, I just love spamming this dyno chart, tee hee.

Simmons · 05-14-2013, 10:12 PM

Quote:

Originally Posted by jflogerzi

UEL! Sound plus look at JDL's. Torque dip is completely gone, and look at how much max TQ they make down low. The dyno at the end of thread that was posted was pure sex. Add in some weight reduction, LW crank pulley and flywheel along with a headerback exhaust of your choice

My car had lightweight (Raceseng) pulleys on it for the dyno.

Simmons

swift996 · 05-14-2013, 10:12 PM

EL = More optimal flow
UEL = More rumble in the jungle

On a N/A setup you're not going to feel a difference between the two in performance. Go with what you feel better with.

Simmons · 05-14-2013, 10:16 PM

Quote:

Originally Posted by youcantseeme24

best performance is an equal length header 90% of the time....manufactures will even tell you that. Correct me if im wrong but isnt the the whole reason they had an Uel header on the ej25 was to fit the turbo in how they wanted correct?

I disagree, look at my dyno from the JDL UEL. About the Best tq curve I have seen from Any header so far?

Simmons

ATL BRZ · 05-14-2013, 10:18 PM

Quote:

Originally Posted by Simmons

About the Best tq curve I have seen from Any header so far?

Yup. Also highest n/a peak HP I've seen of any BRZ/FRS/GT86

industrial · 05-14-2013, 11:37 PM

Quote:

Originally Posted by Simmons

I disagree, look at my dyno from the JDL UEL. About the Best tq curve I have seen from Any header so far?

Simmons

Easily. Completely killed the dip without adding another one and great top end.

Xdragonxb0i · 05-15-2013, 12:30 AM

i Went EL to have a Catted headers. when revving its high strung sounds like a f1 car

joergasm · 05-15-2013, 01:17 AM

What if I were to turbo, does that change the decision on equal and unequal?

Touge86 · 05-15-2013, 01:26 AM

Does having a non-catted header make it illegal? In CA? or does that have to do with the front-pipe. I'm new to this front side of the exhaust system ^_^.

velin86 · 05-15-2013, 02:11 AM

Quote:

Originally Posted by Touge86

Does having a non-catted header make it illegal? In CA? or does that have to do with the front-pipe. I'm new to this front side of the exhaust system ^_^.

you wont pass smog w/o both cats

05-14-2013, 09:14 PM	#16
WolfsFang Scrape Master Join Date: Jun 2012 Drives: Goal: Oldest FRS State Side Location: North NJ Posts: 1,161 Thanks: 238 Thanked 412 Times in 238 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	I went with Borla UEL since it produced the best rumble in my opinion. __________________ You do realize comparing the BRZ to the FR-S is like comparing which hand you love masterbating too right?

05-14-2013, 09:25 PM	#17
Nezz 86DESU Join Date: Jun 2012 Drives: 86 GTS, S13, CB9 Location: Victoria Posts: 294 Thanks: 25 Thanked 69 Times in 51 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	There's some nice EL headers but it's worth noting they do a little less against the "dip" and more for the peaks. It's honestly a non issue for me-- the Silvia is fairly cammy and won't respond properly below 4,000 RPM anyway so I'm kinda used to a peaky motor, the dip doesn't bother me. I'm going to go EL for the sound, Porsche style bark. But, that's me. Wait for more header dynos for salient information. __________________ Careful. It's contagious! Last edited by Nezz; 05-14-2013 at 10:12 PM.

05-14-2013, 10:11 PM	#19
ATL BRZ Driving Coach Join Date: Jun 2012 Drives: BRZ Location: Atlanta Posts: 3,666 Thanks: 3,723 Thanked 4,137 Times in 1,707 Posts Mentioned: 90 Post(s) Tagged: 6 Thread(s)	JDL UEL for me. Because Subaru. Also because torque bump (with JDL UEL header, E85 tune, intake, headerback) Not my car or my dyno, still waiting on my header. It's @Simmons BRZ, I just love spamming this dyno chart, tee hee. __________________ __________________________Pure Motorsport: JDL Turbo BRZ Track Build_______________________

05-14-2013, 10:12 PM	#21
swift996 Senior Member Join Date: Nov 2011 Drives: Subaru BRZ Limited 6MT Location: Winston-Salem, NC Posts: 2,432 Thanks: 712 Thanked 954 Times in 545 Posts Mentioned: 47 Post(s) Tagged: 0 Thread(s)	EL = More optimal flow UEL = More rumble in the jungle On a N/A setup you're not going to feel a difference between the two in performance. Go with what you feel better with. __________________ Innovate Supercharged Black Limited BRZ 6-Speed MT(Build Thread) 2010 Cadillac CTS-V Sedan M6 w/550whp (Build Thread)

05-15-2013, 12:30 AM	#25
Xdragonxb0i Senior Member Join Date: Nov 2011 Drives: ex500r Location: AR Posts: 859 Thanks: 13 Thanked 105 Times in 77 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	i Went EL to have a Catted headers. when revving its high strung sounds like a f1 car __________________

05-14-2013, 09:12 PM	#15
wrxgoose WUB WUB Join Date: Aug 2012 Drives: 2013 Firestorm Location: Charlotte Posts: 2,788 Thanks: 313 Thanked 1,573 Times in 858 Posts Mentioned: 52 Post(s) Tagged: 1 Thread(s)	I went with UEL, because boxer moters deserve the burble. Doesnt sound right to me otherwise

05-14-2013, 10:08 PM	#18
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)	best performance is an equal length header 90% of the time....manufactures will even tell you that. Correct me if im wrong but isnt the the whole reason they had an Uel header on the ej25 was to fit the turbo in how they wanted correct?

05-15-2013, 01:17 AM	#26
joergasm Senior Member Join Date: Sep 2012 Drives: Subaru BRZ 2013 - SWP 6MT Location: Toronto Posts: 354 Thanks: 97 Thanked 42 Times in 25 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	What if I were to turbo, does that change the decision on equal and unequal? __________________

05-15-2013, 01:26 AM	#27
Touge86 Senior Member Join Date: Apr 2013 Drives: 2013 DGM BRZ M/T Location: Camarillo, CA Posts: 200 Thanks: 31 Thanked 47 Times in 32 Posts Mentioned: 9 Post(s) Tagged: 1 Thread(s)	Does having a non-catted header make it illegal? In CA? or does that have to do with the front-pipe. I'm new to this front side of the exhaust system ^_^. __________________

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