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Gutting the downpipe, anyone tried??

Posted: Tue Jan 18, 2005 2:17 pm
by snowjob
has anyone gutted their cat :roll: has it improved things? I would emagine it would act like a catless downpipe, but I'd like to hear from someone who has done it before I destroy my Cat.

Frazer

Posted: Tue Jan 18, 2005 5:36 pm
by BAC5.2
With the cheapness of downpipes on e-bay, you can just get one pre-catless.

Posted: Tue Jan 18, 2005 6:07 pm
by snowjob
true, but it's alot cheaper to take the one you have on the car, gut it and slap it back on...I'm cheap....

Posted: Tue Jan 18, 2005 6:14 pm
by BAC5.2
Ahh, well, you COULD do this I suppose. As long as you don't have to get emissions tested.

I dunno, the stock bit doesn't flow very well to begin with.

Posted: Tue Jan 18, 2005 8:37 pm
by 91White-T
How would you do it? The bends on it will make it almost impossible to get to it all.

Posted: Tue Jan 18, 2005 10:52 pm
by QuickDrive
Cut

Smash

Weld

?

Posted: Tue Jan 18, 2005 11:14 pm
by mikec
QuickDrive wrote:Cut

Smash

Weld

?
Agreed. Definitely the fastest way to do it.

Someone I know tried to gut his uppipe, and only managed to turn the catalyst into a big blob that was unbreakable. :roll:

Posted: Wed Jan 19, 2005 5:53 am
by BAC5.2
Cut, replace cat area with standard peice of pipe, weld.

That's even easier.

Posted: Wed Jan 19, 2005 1:58 pm
by snowjob

Posted: Wed Jan 19, 2005 10:20 pm
by irishsetter
How did this get gutted without cutting the cat?

Posted: Fri Jan 21, 2005 3:55 am
by snowjob
read the writeup under www.scoobymods.com
It's in the wrx section under gutting pipe.