Headers - Subaru WRX Forum
 
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post #1 of 12 Old 06-25-2008, 10:10 PM Thread Starter
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Headers

Hey Guys, I have serched around and no one really talks about the header install as an option. I am really new to the import moding scene. I was just thinking if I am going to do the down and up pipes why not just get the full header set up with the up pipe. Then tune.
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post #2 of 12 Old 06-26-2008, 12:12 AM
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That's not a bad idea. I'm not exactly sure why, but not very many suby owners talk about headers (in comparison to other enthusiasts). If you don't mind the difference in sound, equal length is the way to go. It's been proven to outperform unequal length in many respects. I searched, read and read some more about headers for months, and I've concluded that the best headers for the money are the gruppe-s equal length, GT spec gen III, and synic. Since you already have a twinscroll oil pain I would get one of the first two I mentioned. The GT specs can be purchased at iagperformance.com. They have the best price (trust me, I looked) and should have gotten a new shipment in yesterday.

If you are a fanboi that would die without the "boxer rumble," I would recommend cusco headers. Unfortunately, they are expensive. If you can't afford them, any other unequal header will do. Almost ALL of them have the same 4-1 design (GT spec gen II, gruppe-s unequal, etc.). Gruppe-s' are pretty cheap and they have a good rep, so I'd get those.

Btw, I'm selling unequal length headers that are replicas of the GT spec gen II for $250+shipping. The brand is xxtuning and the quality is top notch. Let me know if you're interested. Selling them ### I got cusco's.
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post #3 of 12 Old 06-26-2008, 01:59 AM
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You can also look into the P&P with highflow crossover pipe. Cheaper and some have had just as much success with them over spending the extra and losing the boxer rumble of the equal length headers.

BTW you dont need to change your uppipe, the 06-07s are catless. Unless you just want to spend money and have a different one on the car.

Joshua
"2007 WRX- PPG'd, 20G- Tim Bailey tuned
Stage 2 2005 WRX
Cobbtuning.com"
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post #4 of 12 Old 06-26-2008, 07:42 AM
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I didn't think there was THAT much of a gain going EL as opposed to UEL. 1 or 2 horse in my eyes doesn't substantiate the change in sound.

Paul
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post #5 of 12 Old 06-26-2008, 08:14 AM
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I didn't think there was THAT much of a gain going EL as opposed to UEL. 1 or 2 horse in my eyes doesn't substantiate the change in sound.
Depends on your tuning ability.It's more torque than HP but You have to remeber there is a big difference between "peak hp" and hp gains in general.You might only gain 2 hp peak(6500rpm) but at 4000rpm gained 20hp.


Perrin Header vs. Stock Header Test - GT35R Kit - NASIOC
Interested in a stock manifold/ported/ported + crosspipe/equal length header comparo? - NASIOC
NASIOC - View Single Post - Interested in a stock manifold/ported/ported + crosspipe/equal length header comparo?

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post #6 of 12 Old 06-26-2008, 12:14 PM
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yes thats true...but even then is 20hp worth that beautiful rumble that makes a subie...i think not..
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post #7 of 12 Old 06-26-2008, 01:07 PM
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Ron, those # coming out of your arse ? I can't see sounding like a Honda or any other 4 banger on the street for that ? Have they been dyno tested or track tested ? If what you're saying is true and all that.... then the rumble isn't worth it. Then again, to lose a little torque in the low range might help the tranny a little.

BTW... I can't view Nasioc here at work.... I will when I get home though. I'm all about getting additional power.

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post #8 of 12 Old 06-26-2008, 02:44 PM
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Ya.The #'s were just an example but the NASIOC tests show what an EL header can do.There are also more than one type of EL header.The size of the primaries make a difference as well.The Suby rumble is a unique sound,but it is also the sound of inefficency.Anybody that knows about exhaust pulses and the scavaging effect knows the stock boxer exhaust is a poor design.It doesn't sound like a honda at all really.The large bore and short stroke of a Subie engine is also part of that exhaust sound.My EL header also quieted down my exhaust alittle and smoothed out the idle.The cars didn't lose torque,in fact the whole powerband was shifted to the left.Here is this as well:
NASIOC - View Single Post - Manifold and Header Comparo results
The results from this required porting of the up-pipe by PDX for the Gruppe-S unequal header.

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Last edited by dumdum; 06-26-2008 at 06:10 PM.
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post #9 of 12 Old 06-26-2008, 06:19 PM
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i think a suby with el headers sounds kinda like an evo........butit sure dont sound like any 4 banger.....
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post #10 of 12 Old 06-29-2008, 12:46 PM Thread Starter
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Now I guess the big question is how hard are headers to install? I have alot of machanical ability, just dont have access to a hoist.
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post #11 of 12 Old 06-29-2008, 05:26 PM
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i should be getting my heads in a day or two. hopefully installed asap. there are theads for the install and it looks fairly simple
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post #12 of 12 Old 06-30-2008, 10:35 AM
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Now I guess the big question is how hard are headers to install? I have alot of machanical ability, just dont have access to a hoist.
Depends if you get one with an intergrated up-pipe or not.One that has an intergrated up-pipe is harder to install,but not to bad.A set of car ramps will work,just make sure they will get you high enough.The metal ones seem to get you higher than the plastic ones.Also do not reuse the old gaskets.You will have leaks.Follow the torque specs in the manual as well.The Remflex or Crucial Racing gaskets work really nice for headers as they are alittle thicker.

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