Sooper High-Flow Cat

[EvolvedDSM]

So, you've got that 3" exhaust on your car (or not), your test pipe is throwing a code and you're worried about Mr. Police Man busting you without a cat. Or maybe you're just bored and want to try to see how bad you suck at welding (like me ;)). If so, read on...

The heat shield halves were removed from the cat. I had to drill out the four spots at the corners and then used a Dremel, chisel and/or a hammer to break it free along the sides. You're left with this:
http://www.norcalevo.net/gallery/albums/album142/DSCF0051.jpg

And these:
http://www.norcalevo.net/gallery/albums/album142/DSCF0020.jpg

Before you unbolt your test pipe, place the lower (flatter) half of the heat shield in place and mark it so that it can be attached with the correct orientation. If you don't have a welder, borrow one or bring it somewhere to have done (like an exhaust shop). You'll end up with something like this (although I hope your welds look prettier than mine :)):
http://www.norcalevo.net/gallery/albums/album142/DSCF0028.jpg

Now you're ready to get it back on the car:
http://www.norcalevo.net/gallery/albums/album142/DSCF0043.jpg

Don't forget your anti-foul adapters to space out the O2 sensor:
http://www.norcalevo.net/gallery/albums/album142/DSCF0044.jpg

[chris]

nice work! =D

[ogvw]

what do those "anti-foul" adapters do? Do they eliminate CEL's?

[EvolvedDSM]

what do those "anti-foul" adapters do? Do they eliminate CEL's?

They do indeed. Best $5 you'll spend ;)

[MarkSAE]

If you guys ever drive behind a car w/ a test pipe, you can smell them a mile away. I'm sure cops know this. I drove around w/ a test pipe on my DSMs for years, but will not do it anymore due to the possibility of $2k+ in fines.

Nice work, BTW. I popped the heat shields off my stock cat and made one of these for my GSX but hardly ever used it.

[evo_dadi]

man i would like to put my test pipe on but living close to the chp station just made it harder for me to even attempt on running catless. but thats certainly a good idea jamie :)

[ogvw]

what do those "anti-foul" adapters do? Do they eliminate CEL's?

They do indeed. Best $5 you'll spend ;)

where can I get them? do I need to stack them?

[EvolvedDSM]

http://www.columbusdsm.com/forum/showthread.php?s=&threadid=3910

I've seen them at all the local auto stores (Kragen, NAPA, Auto Zone). I used both (they come as a 2-pack) because I read that using only one still produces the code.

[EvolvedDSM]

Oops, I forgot you have to be registered to view that board now :oops: Here's my post:

Rear O2 Sensor CEL "fix"

For my fellow OBD-II owners who are tired of staring at that CEL when you pop on a test pipe for those "off road only" events :wink: Swing by your neighborhood auto store and look for the HELP! products. Pick up item #42009 (two 18mm spark plug non-foul adapters). You'll notice that the hole in the end is a little too small for your sensor to fit through. Drill one of them out to a little more than a 1/2" (go in baby steps as you'll want to keep the hole centered). Put the unaltered one on the bung attached to the pipe, then put the englarged one on and, finally, the sensor itself. (Hint: keep the test pipe disconnected and allow the rear section of exhaust to hang down to allow more room to work with.)

[Gruppe-S]

nice! :)

[GReddy_917]

Wow, thanks for the write up Jamie!! I used the anti-foul adaptors and no check engine light! The only bad thing is now my car is a lot louder..lol.

[Gruppe-S]

Wow, thanks for the write up Jamie!! I used the anti-foul adaptors and no check engine light! The only bad thing is now my car is a lot louder..lol.

;) looks like you got that sucker on! did you notice any hp gain? haha

Cal

[redevil9mr]

I have a 3 inch random technology HFC and a 3 inch UR racing. Mainly on the street, I will just use the HFC and when tracking, use the test pipe. 7-10 hp on a test pipe, daily driven on the street is not worth a 2,000.00 ticket, HHmmmm...... 2,000.00 can buy me a atp stealth turbo!!!!Yummmy

[redevil9mr]

BTW, you will smell the toxic fumes from your exhaust everyday with a test pipe which
= to shorter life to live.

[dabaysevo]

Holy Thread Revival!!!!!!

[BigEd925]

I have a 3 inch random technology HFC and a 3 inch UR racing. Mainly on the street, I will just use the HFC and when tracking, use the test pipe. 7-10 hp on a test pipe, daily driven on the street is not worth a 2,000.00 ticket, HHmmmm...... 2,000.00 can buy me a atp stealth turbo!!!!Yummmy


best of both worlds...............RRE Rally Cat............looks like a cat, smells like a test pipe :) :lol:

[lqdchkn]

I have a 3 inch random technology HFC and a 3 inch UR racing. Mainly on the street, I will just use the HFC and when tracking, use the test pipe. 7-10 hp on a test pipe, daily driven on the street is not worth a 2,000.00 ticket, HHmmmm...... 2,000.00 can buy me a atp stealth turbo!!!!Yummmy



Thanks for the post. :) But this thread is 3years old. :lol:
BTW, you will smell the toxic fumes from your exhaust everyday with a test pipe which
= to shorter life to live.


Thanks for the post. :) But this thread is 3 years old :lol:

*Edit becuase stupid thread didn't post my comment*

[AreSTG]

smells like a test pipe :) :lol:


lol that's a con in my book, as well as the TB bumper it gives my WW