Cobb Down Pipe Install - Page 2 - Subaru WRX Forum
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#16 Old 07-25-2013, 12:51 PM
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Originally Posted by boo-key bear View Post
Not sure about the new gen but, mine i had to modify the heat shield. You can either do that or buy a bling bling one
I'm planning on modding the stock one for now. I found a DIY modification guide.

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#17 Old 07-25-2013, 12:54 PM
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You're better off getting the o2 off when it's hot though.

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#18 Old 07-25-2013, 01:03 PM
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That's a good point. I could get the car hot, remove the sensor, let it cool and do the dp. Is the O2 sensor 22mm?

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#19 Old 07-25-2013, 01:07 PM
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Get an o2 removal socket. They come in handy.

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#20 Old 07-25-2013, 01:11 PM
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Yea that's what I was thinking of doing but wasn't sure of the size, or is it a standard size?

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#21 Old 07-25-2013, 01:19 PM
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I think it's a 22.... standard size I believe.

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#22 Old 07-25-2013, 01:27 PM
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Great thank you

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#23 Old 08-01-2013, 11:58 PM
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Remove cold! If the nuts are warm great chance 1. they won't come off 2. they'll start to then stop, bind seize up and snap (ask me how i know, 2 cars, 3rd time i learned my lessen) or 3. strip.

Also use a 6 sided wrench. No 12 sided BS! A socket and ratchet move the force away from the nut and it can bind the bolt and bend it and it won't come off or snap it. Just get a big 1/2" socket to go over the wrench then add a 1/2 extension for torque.
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#24 Old 08-02-2013, 08:14 AM
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Quote:
Originally Posted by synolimit View Post
Remove cold! If the nuts are warm great chance 1. they won't come off 2. they'll start to then stop, bind seize up and snap (ask me how i know, 2 cars, 3rd time i learned my lessen) or 3. strip.

Also use a 6 sided wrench. No 12 sided BS! A socket and ratchet move the force away from the nut and it can bind the bolt and bend it and it won't come off or snap it. Just get a big 1/2" socket to go over the wrench then add a 1/2 extension for torque.
Now THIS is the voice of experience, and fabulous advice. Not sure most have that selection of spanners though; both 6 and 12-sided closed-end wrenches.

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#25 Old 08-02-2013, 08:24 AM
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Quote:
Originally Posted by synolimit View Post
Remove cold! If the nuts are warm great chance 1. they won't come off 2. they'll start to then stop, bind seize up and snap (ask me how i know, 2 cars, 3rd time i learned my lessen) or 3. strip.

Also use a 6 sided wrench. No 12 sided BS! A socket and ratchet move the force away from the nut and it can bind the bolt and bend it and it won't come off or snap it. Just get a big 1/2" socket to go over the wrench then add a 1/2 extension for torque.
Great thank you that's a big help! I'm hoping to do this in the next few weeks. Good thing you mentioned no sockets, I definitely would have went that route first.
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Now THIS is the voice of experience, and fabulous advice. Not sure most have that selection of spanners though; both 6 and 12-sided closed-end wrenches.
I'm willing to purchase any tool that will help me in the long run to save myself any headaches.

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#26 Old 08-02-2013, 08:55 AM
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I've always used impact sockets... With impact swivels. To each their own though.

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#27 Old 08-02-2013, 10:01 AM
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I've always used impact sockets... With impact swivels. To each their own though.
I have that stuff. Did you actually use an impact gun? Is there enough room for the gun?

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#28 Old 08-02-2013, 01:23 PM
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Quote:
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I have that stuff. Did you actually use an impact gun? Is there enough room for the gun?
Nope, elbow grease

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#29 Old 08-07-2013, 08:56 AM
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How hard was the O2 sensor to remove? I have 13k miles on her and I'm hoping to install the new dp this weekend. Would it be recommended to buy an O2 sensor socket? Would it be okay to use an impact gun on it if it won't budge? I plan on spraying the crap out of it with pb blaster of course.

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#30 Old 08-07-2013, 11:16 AM
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Quote:
Originally Posted by arewmors View Post
How hard was the O2 sensor to remove? I have 13k miles on her and I'm hoping to install the new dp this weekend. Would it be recommended to buy an O2 sensor socket? Would it be okay to use an impact gun on it if it won't budge? I plan on spraying the crap out of it with pb blaster of course.
O2 sensors are not terribly difficult to remove. I've removed mine several times now. PB Blaster is definitely helpful. An O2 socket is an excellent investment, although it's probably not a tool you will use too frequently, so you could check with your local auto parts stores and see if they have a program where you can borrow one after giving them a small security deposit which you'll get back after returning the tool in good working order (my local AutoZone does this). You shouldn't need an impact gun, just use elbow grease and a small extension or a light hammer tap or two if you have to. I find that when I come across a stubborn bolt, if I step away for a moment, stare at it, cuss at it, get angry at it and return with a small boost of adrenaline, it usually loosens up. A nice fist pump at the end is icing on the cake

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