Gutted Up pipe...any problems?

abqkid · 01-19-2004, 01:16 AM

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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skinart76 · 01-19-2004, 02:16 AM

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

mexicanpizza · 01-19-2004, 03:05 AM

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.

supermarkus · 01-19-2004, 03:12 AM

~14K on mine and no problems yet.

rotorbaru · 01-19-2004, 09:07 AM

If you leave the stock EGT in it will probably fail within a few thousand miles, just put in the 2.5k ohm resistor.

Jaxx · 01-19-2004, 11:04 AM

yep my egt sensor failed wint in ~5000 miles..

mexicanpizza · 01-19-2004, 11:05 AM

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

abqkid · 01-19-2004, 12:12 PM

thanks all

abqkid · 01-19-2004, 12:13 PM

oh yeah, when you say the egt sensor fails, does that mean you get a CEL or something else?

supermarkus · 01-19-2004, 12:56 PM

even better, you get thrown into limp mode as well.

jcwrx · 01-19-2004, 01:28 PM

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

abqkid · 01-19-2004, 02:13 PM

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.

mexicanpizza · 01-19-2004, 02:53 PM

Bolt = M12x1.25

Resistor from radio shack works perfectly. The plug is located under that boost control cover. Read that thread I gave you

abqkid · 01-19-2004, 03:00 PM

yo jcwrx,

check this out
http://webpages.charter.net/baraboo_...ppipe_fix.html
that should tell you how to remove the cat

abqkid · 01-19-2004, 03:02 PM

bye the way...what causes the resistor to fail? And why would it not fail when the pipe is not gutted?
thanks

jcwrx · 01-19-2004, 09:30 PM

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

cronic · 01-19-2004, 09:54 PM

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

pityr · 01-19-2004, 09:55 PM

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.

rex65 · 01-20-2004, 03:57 PM

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

gotsol · 04-02-2004, 08:30 AM

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.

vile · 04-02-2004, 09:51 AM

it could be debri in between the pipe and the heat shield

tjthorson · 04-02-2004, 10:03 AM

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.....

01-19-2004, 01:16 AM	#1
abqkid Scooby Specialist Member#: 52295 Join Date: Jan 2004 Chapter/Region: SWIC Location: Albuquerque Vehicle: 2003 WRX Wagon PSM	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 * Registered users of the site do not see these ads.

01-19-2004, 01:28 PM	#11
jcwrx Scooby Specialist Member#: 25989 Join Date: Oct 2002 Chapter/Region: NWIC Location: Bend, OR Vehicle: 2009 WRX Stage 2+ Lightning Red Hatchback	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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01-19-2004, 02:16 AM	#2
skinart76 Scooby Specialist Member#: 30769 Join Date: Dec 2002 Chapter/Region: SCIC Location: Anaheim Hills, CA Vehicle: 2003 WRX Wagon Sonic Yellow	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

01-19-2004, 03:12 AM	#4
supermarkus Scooby Guru Member#: 6971 Join Date: May 2001 Location: Edmonds, Washington, USA Vehicle: 2008 WRX STi SSM	~14K on mine and no problems yet.

01-19-2004, 09:07 AM	#5
rotorbaru Scooby Newbie Member#: 22493 Join Date: Aug 2002 Location: Charlotte, NC Vehicle: 2003 Impreza WRX Silver Cobb stg 2	If you leave the stock EGT in it will probably fail within a few thousand miles, just put in the 2.5k ohm resistor.

01-19-2004, 11:04 AM	#6
Jaxx NASIOC Supporter Member#: 177 Join Date: Aug 1999 Chapter/Region: NWIC Location: Boise,Idaho,USA Vehicle: The 93 Imp W/EJ20K flat black	yep my egt sensor failed wint in ~5000 miles..

01-19-2004, 12:12 PM	#8
abqkid Scooby Specialist Member#: 52295 Join Date: Jan 2004 Chapter/Region: SWIC Location: Albuquerque Vehicle: 2003 WRX Wagon PSM	thanks all

01-19-2004, 12:13 PM	#9
abqkid Scooby Specialist Member#: 52295 Join Date: Jan 2004 Chapter/Region: SWIC Location: Albuquerque Vehicle: 2003 WRX Wagon PSM	oh yeah, when you say the egt sensor fails, does that mean you get a CEL or something else?

01-19-2004, 12:56 PM	#10
supermarkus Scooby Guru Member#: 6971 Join Date: May 2001 Location: Edmonds, Washington, USA Vehicle: 2008 WRX STi SSM	even better, you get thrown into limp mode as well.

01-19-2004, 02:13 PM	#12
abqkid Scooby Specialist Member#: 52295 Join Date: Jan 2004 Chapter/Region: SWIC Location: Albuquerque Vehicle: 2003 WRX Wagon PSM	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.

01-19-2004, 02:53 PM	#13
mexicanpizza Scooby Specialist Member#: 16779 Join Date: Mar 2002 Chapter/Region: SCIC Location: Oceanside, CA Vehicle: 2008 God's Gift to Turbo Wagons (MS3)	Bolt = M12x1.25 Resistor from radio shack works perfectly. The plug is located under that boost control cover. Read that thread I gave you

01-19-2004, 03:00 PM	#14
abqkid Scooby Specialist Member#: 52295 Join Date: Jan 2004 Chapter/Region: SWIC Location: Albuquerque Vehicle: 2003 WRX Wagon PSM	yo jcwrx, check this out http://webpages.charter.net/baraboo_...ppipe_fix.html that should tell you how to remove the cat

01-19-2004, 03:02 PM	#15
abqkid Scooby Specialist Member#: 52295 Join Date: Jan 2004 Chapter/Region: SWIC Location: Albuquerque Vehicle: 2003 WRX Wagon PSM	bye the way...what causes the resistor to fail? And why would it not fail when the pipe is not gutted? thanks

04-02-2004, 08:30 AM	#20
gotsol Scooby Specialist Member#: 17346 Join Date: Apr 2002 Chapter/Region: South East Location: All Over NC Vehicle: 08 Cayman S White	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.

04-02-2004, 09:51 AM	#21
vile Scooby Specialist Member#: 32371 Join Date: Jan 2003 Location: formerly known as mem. # 10615 Vehicle: '02 t-rex wagon platinum	it could be debri in between the pipe and the heat shield