0Kaley@DragonRace

I am doing my instal right now on my heads/cam/headers. I can't decide if I should run w or w/o cats. How much power will I see? Thanks, Kaley

larrysb

Stick with the cats. No smell, less pollution, no hassles with the law or the smog inspectors. Not that much power in most cases. 10hp give or take, in the case of a car with major uprade, like yours.


If you just want to run catless, then do it right, purchase an off-road pipe set. It works better than gutting the cut with a screwdriver. Then when you change your mind, you can just reinstall the cats.

Before anyone whines about "politics", I'm a gun-toting, native born Texan, voted for Reagan and both Bushes and I had beef for dinner tonight.

I been there, done that a long time ago. In retrospect, it just wasn't worth the minor gains in return for the downsides and the undeniable contribution to the air pollution. Besides, today's cats are very good.

clancy

:iagree: :iagree: :iagree:

Radiant Heat

"I'm a gun-toting, native born Texan, voted for Reagan and both Bushes and I had beef for dinner tonight"

LMAO. I think we need that on a T-Shirt...

Patches

:cheers:

2C5only21, I don't think you should run catless as a rule. If you want to run ORP's while racing, that's one thing. But driving around with no cats on a daily basis really makes no sense. That's why some of these header manufacturers have come out with swappable cats/ORP systems and why I got my FLP's. If I ever decide to pull the cats, it won't be a major one-way permanent commitment.

Besides, the gains are only moderate at best. And if it's sound you're looking for, I'm running h/c, headers and Borla Stingers and I'm sure I'd get cited if it were any louder. :yesnod:

:cheers:

AFVETTE

This is a personal matter much like "should I drive home after a few beers". For an extra 10HP I wouldn't take that approach. But if 10HP means that much to you, it's your choice though I dis-agree with running cat-less.

Tom
USAF Retired

6Speeder

I dyno'd my heads/cam car with open headers and got 425rwhp. We then put on the full exhaust (x-pipe, stock cats, Corsa cat-back) and got 413 rwhp. So I saw a whopping 12 hp gain. With a full exhaust but no cats you wouldn't even see that much gain. IMHO it's not worth it for a street driven car. :seeya

RWhite

I just replaced my stock cats/Bassani x-pipe with a Random Technology cat/x-pipe system. I did not feel any difference over the setup I had w/o cats. In fact, the system I have now is slightly louder at WOT than w/o cats. I only ran the car w/o cats for a few weeks, but I am positive I have lost almost nothing (SOTP feel) over the no cats setup. To me, this means the torque is basically the same. Go with a quality cat system and you will not be disappointed.

kingFranswa

Sorry, i dont agree. I took off my cats, and sware i lost power, sounded like crap, and the smell. Put them back on and much better now. :nono:

Bink

I burnt my cats up a couple weeks ago. Running LGM Long tubes->ORP ->corsa X-pipe -> Borla Stingers. I like aggresive sounding cars, obviously-see cam, but in suburbia it's too darn loud. I'll be putting cats back on soon. :yesnod: FWIW.

see5

I tried it and it "stinks".

aaaaa

Hey skippy, the only whiner here is you. Sure am tired of your tree huggin. The man asked for advise regarding performance, not politics. Take it somewhere else.

Cary

:lolg: I guess at 42 years old I'm going deaf & can no longer detect foul odors. I'm running the Pro LG/Borla LT Header system (w/o Cats) in combo w/Borla Stinger & its not too loud nor stinky for me :lol: However, I do not have performance cam, yet :reddevil

Cary

Please don't swear (sware?) :lol: . Seriously, do you have an Xpipe & did you have an LS1 Edit tuning along w/dyno pulls when you removed the Cats?

Just curious :crazy:

larrysb

What's the matter cowboy? Miss a dose this morning?




[Modified by larrysb, 1:30 AM 8/14/2003]

Special K

What's the matter cowboy? Miss a dose this morning?




[Modified by larrysb, 1:30 AM 8/14/2003][/QUOTE]

Hey Larry,

I didn't see you whining. He probably throws his trash out the window too.

Bob
:flag

wwashing

A personal matter? Until the driver involves someone else! :eek:

aaaa

:lolg: :lolg: :lolg: :lolg: :lurk:

jimman

How did you get whiner and tree huggin out of that post, I must have missed that with the Hooked on Phonics course.

2001 Red Coupe Bandit

Taking the cats off with proper tuning will pick up hp and a good amount of torque. It isn't for everyone, but I don't see how (performance wise) you could do anything but GAIN more hp/tq with the cats off. There isso much less restriction with the cats off and if you have an 01 liek me, there are 4 of them.

I have the ability to put mine back on if I need to and have an extra center cats section if needed. The smell isn't bad, but when I am at idle with the top off, I do smell it, regular driving I never notice it. Mine is tuned perfectly though on the dyno and about 10 hours of tweaking with a GM Tech 2 tool.

To each his own :cheers:

Oh ya. I live in Texas :D


[Modified by 2001 Red Coupe Bandit, 6:34 PM 8/14/2003]