Equal length headers make more power than UEL? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Mixlplix · 10-13-2013, 08:45 PM

The thread title says it all. Does dyno testing show any advantage to EL headers over UEL headers?

boxer 2.5 · 10-13-2013, 08:48 PM

Think of this... Is it easier for air to smoothly rush out equal ports, or rush out of 4 ports at different times, fighting each other. There are tons of wrx/sti dyno's to look at.

u/Josh · 10-13-2013, 09:04 PM

Quote:

Originally Posted by boxer 2.5

Think of this... Is it easier for air to smoothly rush out equal ports, or rush out of 4 ports at different times, fighting each other. There are tons of wrx/sti dyno's to look at.

Here is one dyno

source: http://www.ft86club.com/forums/showthread.php?t=27091

wparsons · 10-13-2013, 10:56 PM

Just because the Borla EL doesn't make more power doesn't mean that all EL headers will make less power, the Borla EL isn't the best design.

If you compare a very well designed UEL header to a very well designed EL header, the EL will make more power.

Turdinator · 10-13-2013, 11:14 PM

Quote:

Originally Posted by wparsons

Just because the Borla EL doesn't make more power doesn't mean that all EL headers will make less power, the Borla EL isn't the best design.

If you compare a very well designed UEL header to a very well designed EL header, the EL will make more power.

This.

If you do some reading on headers it is pretty straight forward concept. EL will always have the potential to make more power and torque. That doesn't mean every manufacturer will produce an EL header that will outperform a well designed UEL tho.

trigger happy · 10-13-2013, 11:21 PM

Good info

FreshFRS · 10-14-2013, 02:12 AM

Check the drift office thread, the HKS EL made very solid gains over the borla UEL (i know that it's Borla not JDL or Revworks). Well designed** EL headers will make more power and torque because they scavenge better taking advantage of smoother, regulated exhaust pulses (this also enhances the scavenging effects), compared to their UEL counterparts in which the exhaust pulses are fighting each other trying to escape the header.

Dimman · 10-14-2013, 03:30 AM

Both Borla headers are UEL. One just more than the other.

FR-S Matt · 10-14-2013, 07:40 AM

The JDL UEL is producing nice numbers so far. No complaints from the people that actually have it and have dyno'd it. The sound is the deciding factor for me. When I go turbo later, I may go EL, but even then the difference is still slight under 400 whp.

johnnie · 10-14-2013, 08:05 AM

Would love to see an EL shootout! HKS vs Supersprint.

10-13-2013, 08:45 PM	#1
Mixlplix Banned Join Date: Sep 2013 Drives: 2013 FR-S Location: Earth Posts: 39 Thanks: 0 Thanked 9 Times in 6 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Equal length headers make more power than UEL? The thread title says it all. Does dyno testing show any advantage to EL headers over UEL headers?

10-13-2013, 11:21 PM	#6
trigger happy Bang Bang Join Date: Oct 2013 Drives: 2013 Raven FR-S Location: louisville, ky Posts: 216 Thanks: 334 Thanked 61 Times in 45 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Good info __________________ Raven 6MT//Injen CAI//VDS UEL//Invidia N1//OFT//ST Coilovers

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10-13-2013, 08:48 PM	#2
boxer 2.5 Senior Member Join Date: Aug 2013 Drives: 2007 Impreza, 2013 BRZ Location: Vernon, CT Posts: 314 Thanks: 240 Thanked 119 Times in 78 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Think of this... Is it easier for air to smoothly rush out equal ports, or rush out of 4 ports at different times, fighting each other. There are tons of wrx/sti dyno's to look at.

10-14-2013, 08:05 AM	#10
johnnie Member Join Date: Jan 2013 Drives: GT86 Location: Europe Posts: 90 Thanks: 25 Thanked 32 Times in 19 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Would love to see an EL shootout! HKS vs Supersprint.

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