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Old 10-08-2012, 05:55 PM   #1
tucker2.0
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Default Staight Pipe on 2.5 Outback?

[FONT='Verdana','sans-serif']I have a 2010 outback with 2.5 and 6 speed MT.[/font]
[FONT='Verdana','sans-serif']I want to have some burble[/font]
[FONT='Verdana','sans-serif'][/font]
[FONT='Verdana','sans-serif']I was thinking of making a 2.5" or 3" straight pipe from the headers back (I think headers, basically under the gear box back) Where the donut gasket is. [/font]
[FONT='Verdana','sans-serif']I'm not looking for any power gains, just some good sound. This car is gutless and Iím not going to attempt to change that. [/font]
[FONT='Verdana','sans-serif'][/font]
[FONT='Verdana','sans-serif']Should I be made aware of any issues this could cause?[/font]
[FONT='Verdana','sans-serif'][/font]
[FONT='Verdana','sans-serif'][/font]
[FONT='Verdana','sans-serif']Note: I can weld and am planning to bend it to the right shape and weld a flange on. My local Master Muffler and Brake will sell me the stuff to do it.[/font]
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Old 10-08-2012, 06:02 PM   #2
HinshawWRX
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It will be loud as hell and you will want to make it quieter after a month.
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Old 10-08-2012, 06:11 PM   #3
tucker2.0
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Sorry my text is all messed up. I tried to copy and past from word.

Other than loud, what do you think? I've heard good lound and nasty rattle can loud. will it sound good?
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Old 10-08-2012, 08:27 PM   #4
424wrx
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it wont sound good. is it even turbocharged? and sounding good is subjective. you may think it will sound great and the next person will hate it. you are asking a null question.
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Old 10-08-2012, 08:47 PM   #5
rob1n1
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Loud as in harsh. As in grating on your ears.

If you can't find an aftermarket system then just get a muffler shop to weld one up. You can have a rumble without wanting to kill yourself to make the pain stop after 10 minutes.
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Old 10-08-2012, 08:50 PM   #6
tommyson01
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Go to youtube and search.
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Old 10-09-2012, 02:31 AM   #7
akfmx
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it will sound good at idle/low rpm but when you get on it, it will almost sound like a Honda. And not in a good way.
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Old 10-09-2012, 02:36 AM   #8
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Quote:
Originally Posted by akfmx View Post
it will sound good at idle/low rpm but when you get on it, it will almost sound like a Honda. And not in a good way.
It's not going to sound like a Honda... the fact that it's a boxer kind of guarantees that.

It won't sound good, though.
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Old 10-09-2012, 03:00 AM   #9
meffy
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Lol you must have never heard an equal length header scoob before. It will sound like **** bro. Get an uel header first, if they even make them anymore. Lol dude thinks just because its a boxer it will sound good lolololol
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Old 10-09-2012, 10:06 AM   #10
KelConquer
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I just did manifold > catalytic converter > 2 1/4" pipe > muffler this week. Much better response and pickup at low RPMs.. can't hear a damn thang though. Now taking the muffler off will have it sounding like poo... it also depends on what piping material/thickness you use, thinner/cheaper metal will make it sound "tinny"
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Old 10-09-2012, 11:35 AM   #11
801soap
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Try it out!! Modding your car is all about trial and error!!
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Old 10-09-2012, 11:56 AM   #12
HinshawWRX
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Quote:
Originally Posted by rob1n1 View Post
It's not going to sound like a Honda... the fact that it's a boxer kind of guarantees that.

It won't sound good, though.
Well it's good to see people giving advice that have no clue what is right. The boxer motor doesn't give it the sound, the UNEQUAL LENGTH HEADER does. No turbo=equal length=sound like any other 4 cylinder.
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Old 10-10-2012, 01:37 PM   #13
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Quote:
Originally Posted by rob1n1

It's not going to sound like a Honda... the fact that it's a boxer kind of guarantees that.

It won't sound good, though.
Oops. I apologize. I forgot that I had just put on UEL headers when I tried straight piping my NA forester. Regardless, my point stands. Without a turbo, it just doesn't sound good UEL or not...
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Old 10-11-2012, 02:08 PM   #14
tucker2.0
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Thanks! Now I understand why my friend got unequal length headers on his NA impreza. I think I'll leave it alone until I can get something with a turbo. One question, why does a turbo Honda not sound like a Subaru?... It must have something to do with the boxer and not just ULHs
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Old 10-11-2012, 06:20 PM   #15
Pandasaurus_rex
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It's the stock header design on a subaru engine. Because the exhaust ports flank the engine and the turbo is located on the passenger side behind the engine, the piping of the headers is longer on the driver's side and collects on the passenger side at the base of the uppipe underneath the turbo. N/A subarus have no need for this, so their stock headers are more equal in length.
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Old 10-11-2012, 06:37 PM   #16
tucker2.0
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So on a none boxer 4 cylinder do the headers just come out one side and just join together at the bottom of the engine bay? Whereas the Subaru has 2 pipes coming off each side of the motor then joining on the right side before going up to the up-pipe? I guess I could google this stuff but that's not as fun. Ha
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Old 10-11-2012, 07:34 PM   #17
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"Typical" 4 cylinder header design.


2.5L header non turbo (obviously some variants exist)


WRX/STI "unequal length" header. Aftermarket top, stock bottom.


WRX/STI "equal length" header. (Unequal top. Equal bottom)


Next time don't be LAZY and educate yourself.
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Old 10-11-2012, 10:58 PM   #18
tucker2.0
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I appreciate your help on that. I'm unsure how to take you last comment. I thought Nasioc was made to connect people who like to learn with those who like to have fun teaching others. Obviously I could have saved time and just googled it but there's more fun in seeing what other Subaru owners have to say about this. Like the guy who said to use a thicker metal so it won't sound tin-can-ish. Any way thanks for your time and help. Good times.
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Old 10-12-2012, 01:31 AM   #19
KelConquer
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Take replies with a grain of salt You're welcome, good luck with the project!
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Old 10-12-2012, 02:12 AM   #20
tucker2.0
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Yeah. After posting that I realized I was the one being all mellow dramatic.
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Old 10-12-2012, 09:33 AM   #21
Bluefoton
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Quote:
Originally Posted by HinshawWRX View Post
"

WRX/STI "unequal length" header. Aftermarket top, stock bottom.

.

Hey, a Nokia 33xx series... back in the day where one could recharge a phone once per week
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