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Exhaust informational thread


jsalicru

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  • 5 weeks later...
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So I need these for up + dp install. (HKS UP and Cobb dp :))

 

Exhaust Manifold to Uppipe Gasket

44022AA170

 

Uppipe to turbo Gasket

44022AA150

 

Turbo to Downpipe Gasket

44022AA180

 

Downpipe to Midpipe

44011FE000

 

Flex Joint Gasket (the donut)

44022AA122

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  • 5 months later...

I feel like this is one of those noob type questions where people will answer by pointing out 5 different threads that answer my question. I've searched and I'll ask anyways. ;)

 

I am shopping for a DP and UP. Which should I buy? Should I be shopping on price only or is there some compelling reason to buy one (Cobb, Invidia, HKS, etc.) over another? I see catted DP's from ~$480-$580. I'd prefer to have the best rather than save $100 when it comes down to it. But if it's all the same I'll spend the $480. My LGT is an '05 MT w/ SPT intake and cat-back, BTW. Thanks.

My '05 LGT

My '07 Supercharged Shelby

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  • 2 weeks later...

UP diameter information, consolidated from various posts...

 

BoostJunkie says the stock UP ID is 1.875.

http://www.legacygt.com/forums/showpost.php?p=114435&postcount=3

 

Jeremy @ Crucial says 1.75:

http://www.legacygt.com/forums/showpost.php?p=250460&postcount=36

 

JDM-STI says 1.6":

http://www.legacygt.com/forums/showpost.php?p=1216409&postcount=58

 

(If there were only two numbers, we could assume they were measuring different ends of the pipe, but it doesn't have three ends...)

 

More confirmation that the turbo inlet side is 1.75

http://www.legacygt.com/forums/showpost.php?p=276150&postcount=46

 

Bosal/STI is the same ID as stock:

http://www.legacygt.com/forums/showpost.php?p=732439&postcount=7

 

Invidia's UP is slightly larger than stock, Cobb's is (approx) same as stock:

http://www.legacygt.com/forums/showpost.php?p=605977&postcount=4

 

Jeremy @ Crucial says Crucial's is same as stock (and Cobb's, and Perrin's) and explains that bigger is usually not better:

http://www.legacygt.com/forums/showpost.php?p=373637&postcount=6

 

PDE's is larger than Crucial's:

http://www.legacygt.com/forums/showpost.php?p=248790&postcount=32

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  • 4 months later...
  • 1 month later...
Quick question... Is the shorty portion of the stock DP for a 5spd sedan and automatic wagon identical? In otherwords, will the stock shorty portion of the DP off of a LGT sedan (5 speed) fit an Automatic Wagon?
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  • 2 years later...
Sorry for reviving a over 2 year old thread but I have a question. I read someplace that the 07 Legacy 2.5GT up pipe is not catted? Is this true? Or would I be better off purchasing a STI Up Pipe cause those are catless. Thanx.
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  • 1 month later...
Can anyone answer this? I have a legacy GT 2.0 Si Drive 2007 model JDM. I want to change my exhaust. I'm thinking about the magnaflow system. Will the system advertised for the legacy 2.5l fit directly on my car Edited by vernon2200
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  • 6 months later...
  • 6 months later...

For all the 3.0 guys out there, here's a list of all the part numbers for a 3.0R sedan factory exhaust from the intermediate pipe back. Since there is not a lot available for aftermarket exhaust for the 3.0, the factory system is one of few ways to go.

 

 

PART # - 44011AE031

QTY REQ - 1

DESCRIPTION - GASKET FR

 

 

PART # - 44200AG53A

QTY REQ - 1

DESCRIPTION - EXH PIPE ASSY R

 

 

PART # - 44380AG08A

QTY REQ - 1

DESCRIPTION - MUFFLER ASSY LH

 

 

PART # - 44380AG09A

QTY REQ - 1

DESCRIPTION - MUFFLER ASSY RH

 

 

PART # - 44011AE01A

QTY REQ - 2

DESCRIPTION - GASKET R/M

 

PART # - 44059AA010

QTY REQ - 2

DESCRIPTION - BOLT

 

 

PART # - 44044AA010

QTY REQ - 2

DESCRIPTION - SPRING

 

PART # - 802008270

QTY REQ - 2

DESCRIPTION - NUT

 

PART # - 902350001

QTY REQ - 4

DESCRPTION - NUT

 

 

PART # - 010510307

QTY REQ - 4

DESCRIPTION - FLANGE BOLT

Edited by CapnJack
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  • 4 months later...
Hi everyone! I just bought a 2012 subaru legacy 2.5i because its all i can afford for now, but I was just wondering if anyone out there has any ideas or suggestion as to how i can gain just 30 more HP, i know stock its 170 i just want to be able to hit that 200hp mark lol. THANK YOU ALL
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  • I Donated Too
Hi everyone! I just bought a 2012 subaru legacy 2.5i because its all i can afford for now, but I was just wondering if anyone out there has any ideas or suggestion as to how i can gain just 30 more HP, i know stock its 170 i just want to be able to hit that 200hp mark lol. THANK YOU ALL

 

trade it in for LGT

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  • 2 months later...
  • 4 months later...
probably not the first to state this on lgt, but aparently the SPT catback that fits on the 08+ wrx sedan fits the 08 Legacy 3.0R nicely. we mock fitted it at work friday and are installing it wednesday. anxious to see how it sounds with the 3.0 NA
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  • 2 weeks later...
probably not the first to state this on lgt, but aparently the SPT catback that fits on the 08+ wrx sedan fits the 08 Legacy 3.0R nicely. we mock fitted it at work friday and are installing it wednesday. anxious to see how it sounds with the 3.0 NA

 

How did this turn out?

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