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Old 11-09-2011, 06:15 PM   #1
Scooby Snax
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Member#: 100916
Join Date: Nov 2005
Chapter/Region: RMIC
Vehicle:
2007 STi
OBP

Default Downpipe Install, How Difficult?

I have most of the tools needed to install my Cobb downpipe on my '07, I already installed the catback. Is it no big thing or should I just save myself the time, swearing and frustration and have a shop install the downpipe?
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Old 11-09-2011, 06:24 PM   #2
car_cursed
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Join Date: Apr 2005
Chapter/Region: RMIC
Location: West Jordan, UT
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More projects than
you can shake a stick at.

Default

It's easy look up the diy instructions.
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Old 11-09-2011, 06:45 PM   #3
Mush04
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Member#: 191705
Join Date: Oct 2008
Chapter/Region: RMIC
Location: Nowhere of importance
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2007 Limited STi
Swp

Default

Here's a quick run down, I just swaped a couple a few weeks ago.

take heat shield off, I believe there'e top and bottom (I never had the stock heat shield so I don't remember exactly) I sugguest replacing with an aftermarket one since the stock one has to be slightly bent or cut to fit the cobb bellmouth.

unbolt the DP from the turbo (not as difficult as you may have heard)

take out the couple support bolts, one is bolted to the transmission, the other just a bracket under the car (can't miss it) then unbolt from catback.

I unplug the O2 sensor cause it's angled up towards the driveshaft, plus they are usually on there pretty good.

then pull it out! haha I know it's not the most in depth instructions, but like car cursed said it's easy just a matter of finding all the bolts and crawling under the car. GL! I usually check nasioc fairly often so if you get stuck or anything PM me.

Or I can just install if for you for $50
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Old 11-09-2011, 07:07 PM   #4
TiM801
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Join Date: Jul 2011
Chapter/Region: RMIC
Location: SLC
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2002 WRX
WRB

Default

It's easy as pie, just takes some strength to get bolts out. and gotta get under car to unbolt turbo stock DP
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Old 11-09-2011, 08:03 PM   #5
Henriksen
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Join Date: Aug 2011
Chapter/Region: RMIC
Location: Utah, Utah E85 County
Vehicle:
2008 DGM STi-Ituned
2008 R6

Default

Just did mine on my 08' took like 45 mins, wasnt bad at all. Waaaay easier than it was on my cramped MS3. Just make sure you put the replacement gasket from turbo to DP on before you bolt everything back on probably would have been 30 mins had I not forgot haha
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Old 11-09-2011, 09:50 PM   #6
snowman4us
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Chapter/Region: RMIC
Location: Salty Lake
Vehicle:
Some GDM V8,
JDM Flat 4 X2

Default

about a 2.315*e^15
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Old 11-09-2011, 11:07 PM   #7
godfather2112
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Chapter/Region: RMIC
Location: utah
Vehicle:
.... OT Supplement
Testing Division.

Default

Quote:
Originally Posted by snowman4us View Post
about a 2.315*e^15
Wrong! God your such a idiot sometimes. If we go according to Ezekial Mostaphod rule, its exactly 2.315*e^15-.241(1+niner foxtrot)


Stupid kiki.
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Old 11-09-2011, 11:47 PM   #8
08WhiteRex
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Chapter/Region: RMIC
Location: Denver, CO
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2012 Mulletmobile

Default

Quote:
Originally Posted by snowman4us View Post
about a 2.315*e^15
No units?!?!?!??! No wonder you got pwned by that PDE exam.....
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Old 11-10-2011, 12:24 AM   #9
hillsboro
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Chapter/Region: NWIC
Location: PDX
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11 STI
05 Outback XT

Default

Quote:
Originally Posted by Henriksen
Just did mine on my 08' took like 45 mins, wasnt bad at all. Waaaay easier than it was on my cramped MS3. Just make sure you put the replacement gasket from turbo to DP on before you bolt everything back on probably would have been 30 mins had I not forgot haha
Also, put the bottom bolt on the turbo first.
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Old 11-10-2011, 12:27 AM   #10
subiewrx001
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Join Date: Nov 2008
Chapter/Region: RMIC
Location: Salt Lake city, Utah
Vehicle:
04 WRX VF34
water/meth, spt intake

Default

To get the o2 sensor out use a large crescent wrench. The sensor sockets seem to strip the sensor, at least mine did.
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Old 11-10-2011, 11:41 AM   #11
phattydrummer
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Chapter/Region: RMIC
Location: TrueTune
Vehicle:
2003 WRX
True Blue

Default

Remove the 02 sensor with the downpipe still installed. Shoot the base of the senosr with some PB Blaster. And if you can get your hands on a quality 02 sensor wrench (Snap-On) and keep it level on the sensor, you will have a much better chance at not rounding the edges off the sensor base.
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Old 11-10-2011, 01:13 PM   #12
Mush04
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Join Date: Oct 2008
Chapter/Region: RMIC
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2007 Limited STi
Swp

Default

I ended up picking up the socket style which is not the greatest, but I just had one of the guys hold the dp in one place so the socket wouldn't round the sensor, plus I couldn't find my pb blaster. Stuff works wonders sometimes.
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Old 11-10-2011, 01:42 PM   #13
Henriksen
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Join Date: Aug 2011
Chapter/Region: RMIC
Location: Utah, Utah E85 County
Vehicle:
2008 DGM STi-Ituned
2008 R6

Default

Pb blaster ftw, really is a life saver at times, just dont get it in your eye, kinda sucks haha
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Old 11-10-2011, 01:52 PM   #14
Mush04
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Join Date: Oct 2008
Chapter/Region: RMIC
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Swp

Default

I've learned the hard way that looking dorky and being slightly uncomfortable wearing safety glasses while under the car keeps all kinds of **** out of your eyes
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Old 11-10-2011, 01:55 PM   #15
bhhamblin
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Chapter/Region: RMIC
Location: Clinton, UT
Vehicle:
13 STI, 83 DR30
93 R32 GTS-T, 93 R32 GTR

Default

It's easy. Make appointment at Solid, drop car off or wait for an hour. Give money. WIN
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Old 11-10-2011, 01:59 PM   #16
fircrest
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Join Date: Nov 2008
Chapter/Region: RMIC
Location: SLC
Vehicle:
2004 Forester XT
PSM

Default

hahahhahha

The first time I did it the hardest thing was breaking the nuts loose (TWSS). PB Blaster is your friend.
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Old 11-10-2011, 11:34 PM   #17
Scooby Snax
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Join Date: Nov 2005
Chapter/Region: RMIC
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2007 STi
OBP

Default

Quote:
Originally Posted by bhhamblin View Post
It's easy. Make appointment at Solid, drop car off or wait for an hour. Give money. WIN
So tempting . . . .
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Old 11-10-2011, 11:37 PM   #18
bhhamblin
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93 R32 GTS-T, 93 R32 GTR

Default

Thats where I take my car.
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Old 11-11-2011, 09:00 AM   #19
car_cursed
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More projects than
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Default

Quote:
Originally Posted by bhhamblin
Thats where I take my car.
That's because you have more money that skills.

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Old 11-11-2011, 09:39 AM   #20
bhhamblin
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Join Date: Oct 2005
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Location: Clinton, UT
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93 R32 GTS-T, 93 R32 GTR

Default

Or because I am there every day..
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Old 11-11-2011, 05:13 PM   #21
Mush04
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Swp

Default

what about both?
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Old 11-14-2011, 05:31 PM   #22
Scooby Snax
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2007 STi
OBP

Default

Is changing out the gaskets from the DP and the donut gasket mandatory or optional?
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Old 11-14-2011, 05:35 PM   #23
car_cursed
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Join Date: Apr 2005
Chapter/Region: RMIC
Location: West Jordan, UT
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More projects than
you can shake a stick at.

Default

I've re used one, but only once, and get some copper gasket sales to help seal it up if you do reuse it
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Old 11-14-2011, 05:36 PM   #24
Henriksen
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Member#: 290178
Join Date: Aug 2011
Chapter/Region: RMIC
Location: Utah, Utah E85 County
Vehicle:
2008 DGM STi-Ituned
2008 R6

Default

I would highly recommend it, especially the donut one as it gets pretty fragile with age, unless the car is only a couple of years old you wont be able to reuse it.
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Old 11-14-2011, 05:45 PM   #25
sackytar
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Location: Grand Rapids MI
Vehicle:
03WR Rally/XTDD/98SJ
PrimerGrey

Default

Just hit up all bolt will some penatration oil like a day before. Before you do the deed, take it out to dinner first.
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