What are people doing with their cats? Ive heard of high flow ones and people just gutting them out..what do you recomend?thanks

 

high flow cat is the only way to get real performance, plus u gotta weld o2 sensor mounts, gutting the cats is just

 

Catco high flow cat is what i recommend. had one on my last CL and its what i'm getting for this one.

 

ill do some research but as a heads up how much do they usually run?

 

I got a magnaflow one for $70, but it throws codes, as yours probably will. Buy an o2 simulator along with your cat.


You really will not notice a difference, even if you get a full exhaust on a 2.2. I should know.

 

my catco cat didn't throw any codes with the stock O2 sensors.

 

What year CL do you have and what size engine? 2.2, 2.3, 3.0L?

 

Judging by his username I'd say 2.3

 

^its a 2.3 judging by his username. probly a 98.

If you took out the Cat completely, would that cause a loss in performance?

 

you'll lose all your performance because you won't be able to pass smog and be illegal to drive. taking out the whole cat converter means no filter for the exhaust, meaning restriction for air flow, meaning more performance. But your car will be loud as helll, and cops will be on your car's ass in 1minute.

 

Just ask gnate and his glasspack

 

same here. just got a catco for my 3.0. my catco w/ magnaflow muffler and 2.5" piping sounds great and throws no codes.

 

I have a catco but it didn't come with o2 bungs, did you guys have to weld one on?

 

their universal cat convertors don't come with bungs as I recall. I brought it to a local shop and they welded a bung onto it. was very easy.

 

i have a 2.2 97..and they dont check emmisions out here..but i dont know it doesnt sound very wirth it..

 

...yeah, I still have a cat, so you can keep the smartass remarks

 

yeah i need to get one...my cat went bad!

 

Random Tech makes a high flow cat with stainless steel body. It's a 300 cell cat with a ceramic substrate. On some of the Acura's we have had to use an 02 extension too but I'm not certain about your car. The cat and hardware kit is $250 shipped to the cont US

 

I wonder which cat would offer the least resistance, the magnaflow, or the catco? I'm also looking for high flow cats for my 98 3.0 CL, as well as 3" piping with magnaflow exhaust. Would the pipe have to narrow to 2.25" to connect to it? Or can you get a cat with different a diameter outlet?

 

what? You want 3" exhaust piping on a N/A car?

 

Is that overkill? I am still learning a lot... What is a good diameter?

 

2.5, dual

 

Yeah man, that's ridiculous unless you're running with a turbo setup.

Hm well, my 2.2L came with a 2" exhaust stock - upgrade to 2.25" is best on the 2.2
I'm almost positive the 3.0 comes with a 2.25" - upgrade to 2.5" is best on the 3.0
...wait for more responses to make that official.

And you can absolutely get cat's with different sized inlets and outlets.

 

yeah thats what i did with my CL...gotta 2.5 dual exhausts....sounds nices and looks good...damnit i need a camera ASAP

 

yeah you do! I want to see that

 

Oh ok sweet. Cause all the magnaflow kits I found for old accords decreased to 2.25 to connect to the cat, and I don't really want that. I guess either of those two cats posted above would be freer flowing than stock. Would they work with the 3.0 though?

@ MoSp33d, awesome, saw some pics of other 1st gen cls with dual exhaust on here a little earlier, looked awesome as I'm sure yours does.

 

screw cats. Mine is useless. Just go straight piping and get an o2 simulator. That's what i'm going to do.

 

yes, it'd been done. with performance gains. On an H22 of course.

I wouldn't bother with an exhaust on an 2.x. just get a muffler for sound.

 

Really??? How? I'm planning on doing an h22 swap, and 3" sound nice and deep usually... I would really like more info

 

idk i saw some fake cats online, just throwin it out there. it looks like a cat but it just has a straight pipe running through it.

 

I can't find any 2.5" piping in any exhaust kits for 94-97 accords... Did everyone just do custom piping?

 

From what i've seen, custom is usually cheaper than a bolt on kit.

 

Yeah cheaper. But I talked to a couple of mechanics while looking into this, and they said it wouldn't last very long with the pipes they would use, maybe 3 years or so. Whereas some of those kits use high-grade stainless steel that will last a really long time. I guess it's rare for a shop around here to carry quality steel like that, then again where I'm at it is pretty rural and isolated.

 

what size cat should i get for a stock 99 CL 3.0

2.25-2.50-3.0 inches

thanks

 

stock 3.0 is 2.25"

 

so this should fit perfectly on my ride?

http://cgi.ebay.com/ebaymotors/Magna...Q5fAccessories

 

or this one
http://cgi.ebay.com/ebaymotors/Magna...Q5fAccessories

 

I have a 2.25 till my axel back when it turns to 2.5" and my glasspack hasnt attracted any cops... even with the silencer out lol

although i did retain my stock resonator?

 

You have a stock resonator and a glasspack resonator?

 

maybe im missing something.. when under my car i noticed what i thought was a stock resonator prior to the rear axle directly in the middle of the car? and i have a glasspack muffler..

I come from the BMW world where my 528i had 3 inline resonators...?