|
|
|
|
| Author |
|
|
Registered
Join Date: Sep 2008
Location: North East Pa
Posts: 256
|
hollowing out catalytic converter
I have a Fabspeed catalytic converter and a Dansk sport muffler, I was curious if i would be able to knock out the catalytic converter, essentially making it a cat-bypass (I think). 1. Would there be any performance gains? 2. Would it make my car too loud? If it is possible, what is the best way to knock out the cat?
__________________
1988 porsche 911 "CE" cabriolet |
||
05-21-2009, 04:11 PM
|
|
|
yep, im slow in the head
|
not sure what tools u have handy but, maybe save the cat u have and use one of these in its place. have someone put some v-band clamps in or something so u can swap back and forth super quick.
 they have a few sizes on there site clicky |
||
|
05-21-2009, 04:15 PM
|
|
|
Registered
Join Date: Jul 2007
Location: Halifax, Canada
Posts: 1,216
|
Okay, the fabspeed cat is $575, the fabspeed cat bypass is $300. I would sell the cat and try to buy a use cat bypass. It seems to me like a waste to take something that is close to 600 and turn it into something that is 300.
I suspect you can sell your cat for a lot more than it will cost you to buy a used cat bypass. |
||
|
05-21-2009, 04:29 PM
|
|
|
Registered
|
fabspeed bypasses are $300? what are their premufflers selling for? maybe I should raise prices on ours? anyhow a hollowed out cat typically makes some odd harmonics that you won't be real excited about
__________________
Ben 89 944,85.5 944 914-6 2.4s GT tribute. 914-6werkshop.com |
||
|
05-21-2009, 04:33 PM
|
|
|
Metal Guru
|
I did a back to back on my SC between a bypass pipe and a hollowed out cat. The hollowed out cat kills HP.
Buy a bypass pipe and sell your cat to some unfortunate Cali resident who needs it to pass emissions.
__________________
Paul B. '91 964 3.3 Turbo Port matched, SC cams, K27/K29 turbo, Roush Performance custom headers w/Tial MV-S dual wastegates, Rarlyl8 muffler, LWFW, GT2 clutch & PP, BL wur, factory RS shifter, RS mounts, FVD timing mod, Big Reds, H&R Coilovers, ESB spring plates- 210 lb |
||
|
05-21-2009, 04:48 PM
|
|
|
Registered
Join Date: Sep 2008
Location: North East Pa
Posts: 256
|
Quote:
__________________
1988 porsche 911 "CE" cabriolet |
||
|
05-21-2009, 04:53 PM
|
|
|
|
Registered
Join Date: Aug 2007
Location: Burlingame, CA
Posts: 538
|
Quote:
I ran a "hollowed out cat" for several months on my SC, what I noticed was at "toodling around town" speeds, the car sounded better, but at high speeds on the freeway, it was annoyingly noisy. I didn't notice it at first, but after running the setup for a couple of weeks it got annoying. I eventually sourced a used OEM euro premuffler, and it balanced everything out.
__________________
- Everything's easier once you get started. - '95 993 C2 '73 911 Targa '88 BMW M3 '84 Mercedes 190e 2.3 16v |
||
|
05-21-2009, 05:00 PM
|
|
|
Registered
Join Date: Dec 2005
Posts: 3,384
|
Performance gains aren't really enough for the effort/cost. Just keep driving the way it is and forget about modifying.
|
||
|
05-21-2009, 05:45 PM
|
|
Porsche Monkey
1991 Porsche 964 Turbo
