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View Full Version : HOW TO: Make your test pipe look like a CAT



trinydex
08-21-2006, 10:00 PM
http://forums.evolutionm.net/showthread.php?t=214763


A little mod that I just finished doing.

Tools used:

1/4" drill bit
Chisel
Hammer
Flat head Screw driver
Mig welder
Vise Grips
Grinder

Items needed:

Test pipe
Stock Cat



1 With the cat out of the car. Take the cat and grind the welds on each seam down. Then drill out the weld at each corner of the heat shield(the weld is the bronze/rust looking circle.

2 Pry the heat shield and grind until you break all the welds free and have both halves of the heat shield off.

3. With the test pipe still on the car take the heat shield and mark where you want it to be. Orientation is important to keep heat shield away from drive line.

4. Tac weld one side of the heat shield to the test pipe.

Picture of how it should look so far
http://www.socalevo.net/gallery/albums/userpics/10991/normal_wMTI2NjgxMzZzNDEzZGZkMzF5NTQx.jpg

5 Get 4 small nuts and bolts together a little smaller or equal to the 1/4" inch holes you made. put those through the holes and tighten down. (don't forget lock washers)

Then tac weld the heat shield together.
http://www.socalevo.net/gallery/albums/userpics/10991/wMTI2NjgxNDZzNDEzZGZkMzF5NTQx.jpg

Test to make sure your welds are good.

Then Enjoy the highest flowing cat on the market.Â* :D

http://www.socalevo.net/gallery/albums/userpics/10991/wMTI2NjgxNjZzNDEzZGZkMzF5NTQx.jpg



*DISCLAIMER FOR OFF ROAD USE ONLY. NOTHING WRITEN HERE IS THE RESPONISBILOTY OF THE AUTHOR!! MOD YOUR CAR AT YOUR OWN RISK AND ACCEPT THE RESPONISBILITIES FOR DOING SO.

Black_Evo
08-21-2006, 11:16 PM
That is exactly what I was going to do. Thanks for the write up!!

JDMboi
10-30-2007, 06:18 PM
i did that on my honda i got pulled over and it worked stupid pigs

heingtaing
06-27-2008, 07:51 AM
looks good... until cop taps on it

XxJDaniels420xX
06-30-2008, 12:15 PM
My cop friends answer was "If I get down on my knees to look under your car with this 50+ lbs around my belt, I'm NOT getting back up."

ELYTEVO8
08-16-2008, 04:14 PM
My cop friends answer was "If I get down on my knees to look under your car with this 50+ lbs around my belt, I'm NOT getting back up."


LOL that's great!

Evolutionized
08-17-2008, 11:01 AM
i suggest throwing some packing inbetween the shields and the pipe...

that way it has a better sound and it wont be hollow...