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Well i did it last week! I gu**ed my main cat and let me tell you i have never felt so much power from my tour. She is fast as it is but when i did that i have so much fun driving her. That is until my water pump broke but that is a different story.
97 se sport K&N drop in filter Sony Explod head unit Mille Miglia MM11-2 16x7 http://v6contourv6.tripod.com/pictures.html Looking To Get SVT side skirts indiglo gauges "How I wish, how I wish you were here. We're just two lost souls Swimming in a fish bowl." Pink Floyd
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Joined: Aug 2000
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Originally posted by v6contourv6:
Well i did it last week! I gu**ed my main cat and let me tell you i have never felt so much power from my tour. She is fast as it is but when i did that i have so much fun driving her. That is until my water pump broke but that is a different story. That is why we call it the "mystery" mod. :p
14.72@ 92.6 mph www.modularV8.com "CLUTCH KILLER" and also recently known as the DRIVETRAIN KILLER
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Damn skippy!!! Now all you need to do is dyno that bad boy, hmmm, wonder where you could do that?!!hint  but i cant wait til the june 15th meet!!! She will be singing such a good song!! 
'95 Tour LX ZETEC MTX TOO MANY MODS TO LIST ANYMORE!! http://www.geocities.com/marine113 Best mod ever to my tour: A Beautiful passenger seat filler, that is my Beautiful Girl!!
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Joined: Jun 2001
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Did you fit a piece of straight pipe through the cat? I think that the empty chamber will cause some flow problems in the exhaust.
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Joined: Sep 2000
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Originally posted by svt2000:
That is why we call it the "mystery" mod. :p Actually the "Mystery Mod" is gutting the pre-cats. Gutting the main cat is bad for performance.
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did you notice any loss of power in the low-end? as in torque? oh ya , how does it sound?
1999 contour se sport- black mtx
-Duratec v6
-dual exhaust
-no resonator
-kkm induction system
-one loud stereo
-35% window tint
-18' Enkei CDR9's on Kumho Ecsta Supras.
-Audi A6 Sidemarkers
(Coming Soon, Very Soon.)
-SVT front and rear bumper.
2002 Passat V6 GLX 4Motion
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Originally posted by DemonSVT: Originally posted by svt2000:
[b]That is why we call it the "mystery" mod. :p
Gutting the main cat is bad for performance.[/b]Would removing the main cat on a 96 Zetec be bad for performance? Stephen
96 Contour, GL, Zetec, ATX.
03/18/1996 Build Date.
Drop in K&N
NGK Laser Platinum Premium Spark plugs
Niehoff Premium Ignition wires
Wheel Well Air Intake Resonator removed.
*Just the beginning*
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Originally posted by DemonSVT:
Gutting the main cat is bad for performance. As I recall (which leaves me wide open to admit I'm wrong later... ) this was true of cars where the main cat had been replaced by straight pipe. Someone found that the expansion chamber at that location was a good thing for scavenging, or some such. Someone please correct me if I'm wrong, here.
"Function before fashion."
'96 Contour SE
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Joined: Jan 2002
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wouldnt know, but i would like to find out!!! cause I am redoin my whole exhaust as soon as i get this turbo on!!
'95 Tour LX ZETEC MTX TOO MANY MODS TO LIST ANYMORE!! http://www.geocities.com/marine113 Best mod ever to my tour: A Beautiful passenger seat filler, that is my Beautiful Girl!!
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Sorry, but having a big chamber in the middle of your exhaust pipe is not good for scavaging.
It is good for causing lots of turbulence and slowing down the flow of exhaust gasses though.
The theory you are refering to is talking about the pre-cats being empty. (Again the "Mystery Mod" vs gutting the main cat)
If you must remove the cat. Put a patch piece of pipe in. Do not just gut it.
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