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.

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.

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.

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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.

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.

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]

:drool:

Depends how the car is used.


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

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

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

Usually power.

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

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.