BlueDog944

'bout how much it run you? If I may ask.

(Sorry for the hijack )

M758

I forget as I had it done about 4 years ago now. Hmm, I think it was arond $20-30. I used the stock pipe and cut the cat out and had them put in a simple tube.

yellow9ll

I just got mine from ebay and it was fairly cheap (75.00) or so. the person i bought it from has more on ebay now do a search for Item number: 8075708287
I am in no way affiliated with the seller i just thought i would pass along the info.

Serge944

The only reason I can see to remove the cat is to save weight. So, the logical choice would be to cut the cat out and weld in some 2.5" .065 tubing. Hell by a 20' stick of it for like 40-50 bucks and cut it accordingly and pimp it on ebay as "Super performance gaining 944 exhaust cat replacement." You might make a few bucks.

I have tried several 944 exhausts, including bursch, a test pipe I made for myself, and a very loud free flowing muffler. There are no, even slightly, noticable power gains. If you had custom software which allowed you to rev over 7k rpm, then maybe there would be a difference.

Yellow - thats not really a test pipe - just a stock exhaust piece up to the actual cat.

StyleLab

k well I'm pretty sure my old cat was garbage, it used to heat up really really hot. Running catless is starting to annoy me. The exhaust fumes are giving me a headache! What kind of cat should I be looking for? Will any 944 cat do or do I need an S2 cat?

Serge944

944 and s2 cats are not interchangeable. Go to a muffler shop and install an aftermarket high-flow cat for $150 or so.

951North

Fumes?! Cat/noCat wouldn't make any difference. You must have a pretty big leak where you cut and pasted things! and have the fumes coming out from under the middle of the car. This is at idle right? I had a similar issue with my side exhaust on another car I once had. Not the smartest thing I did but as you say live and learn.

nickg

if the old cat was getting really hot, there is something wrong with your car. if raw fuel goes in the cat, it burns like a jet engine with the heat of the exhaust...if your car is too lean, then you have a hot exhaust. you have to understand that these catalysts don't "wear out" rather, they get damaged and destroyed by other defects in the fuel or ignition systems.... classic snowball effect

StyleLab

Thanks for the info. maybe I should look into replacing my o2 sensor, my gas milleage isn't stellar... you wouldn't happen to have a spare cat lying around would you nickg?

TD in DC

I have 2.5" pipes all the way back with only a flowmaster 2 chamber race series muffler and it seems to do well. I need to dyno to verify. It is loud as hell, though.

Campeck

i get 470..check your o2

Campeck

btw. i have like 3-4 stock 8v na downpipe back exhausts if anyone is interested.