cat removal...
#2
ALLyourRX7areBELONGtoUS
Join Date: Apr 2004
Location: Shoreline,WA
Posts: 357
Likes: 0
Received 0 Likes
on
0 Posts
yes many companies sell a "cat replacement" presilencer, directly replaces the cat
www.racingbeat.com for example
www.racingbeat.com for example
#3
Now With 10th AE Fun!
iTrader: (1)
Join Date: Jun 2005
Location: CA
Posts: 1,869
Likes: 0
Received 0 Likes
on
0 Posts
Well if you gut the cat it will sound weird. When it backfires it will sound like it is happening in the cat. I would recommend measuring the cat, (I believe when I did it it was 17" or 17.5") then going to an exhaust shop and getting two flanges welded on the ends like the ones the cat has on it. Or you could spend like $75 bucks and get one from Corksport.
#4
Senior Member
Join Date: Aug 2005
Location: Portland. OR
Posts: 303
Likes: 0
Received 0 Likes
on
0 Posts
If its s4 NA don't forget about the split air pipe for activating your 5&6 ports. If you weld in a straight pipe you will lose this functionality and performance will suffer. I have one of the bonez high flow cats and it works pretty well, flows much better than the stock ones. I sometimes wish i had just gutted my stock cats, i havent heard of them sounding wierd on a rx7 but i've never tried it. I know on hondas it works very well cause my friend did it and it sounds a lot better than hondas with straight pipes, and opened exhaust flow right up.
I'd say its worth a shot to try gutting yours. The hardest part is getting the old old bolts out and once you do that, taking it on and off is a cinch. The worst thing that can happen is you are careless and break your factory cats causing an exhaust leak at which point you'll have to replace it. I'd definately invest in some new gaskets for whatever you do, you can always re-use them on a different set up if you dont like how it works.
I'd say its worth a shot to try gutting yours. The hardest part is getting the old old bolts out and once you do that, taking it on and off is a cinch. The worst thing that can happen is you are careless and break your factory cats causing an exhaust leak at which point you'll have to replace it. I'd definately invest in some new gaskets for whatever you do, you can always re-use them on a different set up if you dont like how it works.
Thread
Thread Starter
Forum
Replies
Last Post
ls1swap
3rd Generation Specific (1993-2002)
12
10-01-15 07:58 PM