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Old 01-19-2004, 01:16 AM   #1
abqkid
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Default Gutted Up pipe...any problems?

Yo yo,
I was planning on gutting my stock up pipe on my o3 wrx. I was wondering if anyone has had any major problems after doing this. I know the cel can come on and that you must get all of the cat material out of the pipe...but other than that?
thanks
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Old 01-19-2004, 02:16 AM   #2
skinart76
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nope, none what so ever. Got rid of the EGT probe, and just went with the resistor. Car is as happy as it can be.

Stan
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Old 01-19-2004, 03:05 AM   #3
mexicanpizza
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Quote:
Originally posted by skinart76
nope, none what so ever. Got rid of the EGT probe, and just went with the resistor. Car is as happy as it can be.
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Old 01-19-2004, 03:12 AM   #4
supermarkus
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~14K on mine and no problems yet.
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Old 01-19-2004, 09:07 AM   #5
rotorbaru
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If you leave the stock EGT in it will probably fail within a few thousand miles, just put in the 2.5k ohm resistor.
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Old 01-19-2004, 11:04 AM   #6
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yep my egt sensor failed wint in ~5000 miles..
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Old 01-19-2004, 11:05 AM   #7
mexicanpizza
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Quote:
Originally posted by rotorbaru
If you leave the stock EGT in it will probably fail within a few thousand miles, just put in the 2.5k ohm resistor.

What he said ^, but 2.2k ohm.

Here's a link to the resistor mod: http://www.clubwrx.net/forums/showth...t=resistor+mod
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Old 01-19-2004, 12:12 PM   #8
abqkid
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thanks all
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Old 01-19-2004, 12:13 PM   #9
abqkid
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oh yeah, when you say the egt sensor fails, does that mean you get a CEL or something else?
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Old 01-19-2004, 12:56 PM   #10
supermarkus
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even better, you get thrown into limp mode as well.
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Old 01-19-2004, 01:28 PM   #11
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Default cat material removal?

What is the best way to remove the cat material. I understand the material is very toxic and one needs to wear a mask and gloves and such.

what is the best method for performing this mod to the OE cat?

Thanks for your time.

JC
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Old 01-19-2004, 02:13 PM   #12
abqkid
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on the stock up pipe do i just plug the bung with a bolt or somthing like that? If i dont have a resistor can i get one at radio shack or something like that? If i install the up pipe with out the resistor how easy is it to go back and install the resistor into the sensor?




yeah you should probably wear a dust mask and gloves from what i have heard. also try and drill it out in a well ventilated area.
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Old 01-19-2004, 02:53 PM   #13
mexicanpizza
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Bolt = M12x1.25

Resistor from radio shack works perfectly. The plug is located under that boost control cover. Read that thread I gave you
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Old 01-19-2004, 03:00 PM   #14
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yo jcwrx,

check this out
http://webpages.charter.net/baraboo_...ppipe_fix.html
that should tell you how to remove the cat
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Old 01-19-2004, 03:02 PM   #15
abqkid
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bye the way...what causes the resistor to fail? And why would it not fail when the pipe is not gutted?
thanks
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Old 01-19-2004, 09:30 PM   #16
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Default Tx kid

Thanks for the link.

JC


Quote:
Originally posted by abqkid
yo jcwrx,

check this out
http://webpages.charter.net/baraboo_...ppipe_fix.html
that should tell you how to remove the cat
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Old 01-19-2004, 09:54 PM   #17
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Quote:
Originally posted by abqkid
bye the way...what causes the resistor to fail? And why would it not fail when the pipe is not gutted?
thanks
I assume you mean what makes the Probe fail? THe probe is there to make sure egt's are within a certain degree.. WHen you run a decatted uppipe the temp changes and causes a cel.. By installing the resistor it tricks the ECU to think it is always that perfect temp.. You can install the uppipe with the stock egt probe and then later go in and remove it..

What you need to do is remove the probe from uppipe, then open up the boost control solonoid cover which is located on the pass side fender.. Follow the wire attached to the probe and locate the connector(should be the botttom connector) Un plug it. Put one end of the resistor in one opening on the plug and the other end of the resistor in the remainng hole, then tape up the end of the connector. Then remove the probe from the car all together.. Now take your bolt and nut screw the nut onto the bolt, screw bolt 1 inch into the uppipe and then tighten down the nut.. Make sure to use a 2.2kohm 1/4watt ressistor.. This job takes all of 5 min..

Dave
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Old 01-19-2004, 09:55 PM   #18
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Quote:
Originally posted by abqkid
bye the way...what causes the resistor to fail? And why would it not fail when the pipe is not gutted?
thanks
Hard to say but Ive burnt up 2 before I just plugged it. Some say its cause the gasses are too hot but I noitced the EGT temps lower significantly when I gutten my up-pipe.


BTWm the sensor actually fails. The EGT temps are not different enough for it to cause a CEL. The CEL comes from teh sensor not reading at all.
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Old 01-20-2004, 03:57 PM   #19
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Quote:
Originally posted by cronic
I assume you mean what makes the Probe fail? THe probe is there to make sure egt's are within a certain degree.. WHen you run a decatted uppipe the temp changes and causes a cel.. By installing the resistor it tricks the ECU to think it is always that perfect temp.. You can install the uppipe with the stock egt probe and then later go in and remove it..

What you need to do is remove the probe from uppipe, then open up the boost control solonoid cover which is located on the pass side fender.. Follow the wire attached to the probe and locate the connector(should be the botttom connector) Un plug it. Put one end of the resistor in one opening on the plug and the other end of the resistor in the remainng hole, then tape up the end of the connector. Then remove the probe from the car all together.. Now take your bolt and nut screw the nut onto the bolt, screw bolt 1 inch into the uppipe and then tighten down the nut.. Make sure to use a 2.2kohm 1/4watt ressistor.. This job takes all of 5 min..



Use a 2.2kohm 1/2 watt resistor. The 1/4 watt has been reported on this forum to burn out. Also, if you look at the pictue posted above it appears that the metal mesh that goes around the cat material is still in the pipe. Make sure you get everyhting out of the cat.

Dave
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Old 04-02-2004, 08:30 AM   #20
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Okay, late in the discussion here, but I've gutten mine and cleaned it real well with a grinder. Used compressed air to clean out the small bits. But I get a noise when I move the pipe, like the is still metal moving around. Yet I can not get the peices out.

Anyone else have this problem when gutting a stock uppipe? I'd havte to put it in and then damage the turbo.
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Old 04-02-2004, 09:51 AM   #21
vile
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it could be debri in between the pipe and the heat shield
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Old 04-02-2004, 10:03 AM   #22
tjthorson
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Quote:
Make sure to use a 2.2kohm 1/4watt ressistor..
According to the thread posted, you should use a 1/2 watt resistor.... the 1/4 is not strong enough.....
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