The other day I noticed rattling in my exhaust. It turns out that the baffles in my cat are loose. So basically I need to replace the cat, or just take it off completly. I can get away with removing it, so is it worth it? Will I notice a HP gain and will i have enough back pressure?

 

Mine are gutted right now. I noticed more power when I gutted them. And it beefs up the exhaust more. I had no back pressure problems. The car runs better without the cats.

 

Is it a better idea to gut the cat rather than remove it?

 

You may also want to install a O2 simulator. Now that you will get more flow that O2 sensor will trip the SES light.

 

I would rather gut the cat. Because if for any reason you need to take it to the shop they may give you hell for not being up on your emissions. If the cat is on there that is a differant story. They will just tell you it needs to be replaced. You are just safer having gutted cats that all.

 

Thanks, that makes sense...is it important to get an O2 simulator for technical reasons? Or is the SES light just annoying to have on

 

The simulator just tricks the computer so the ANNOYING SES light won't come on. You need that light to come on when you have a problem. If it is on just because your cats are gutted or removed then you won't know if you really have a problem.

 

ok thats what I thought. Do you know anything about PCMforless.com? For a car like mine, without any mods besides the exhaust I don't know if it would really benefit me in anyway

 

No I have not heard of that before. That's a new one to me. I will check it out.

 

i SAY REMOVE THE CAT IF YOUR NOT WORRIED ABOUT PASSING INSPECTION OR ANYTHING. MY 95 HAD THE SINGLE CAT AND i HAD IT REMOVED NO PROBLEMS WITH ANY LIGHTS. AWESOME EXHAUST TONE WITH FACTORY MUFFLER! AND THERE SHOULDNT BE ANY O2 SENSORS BEHIND THE CAT UNLESS THE 94 IS DIFFERENT FROM THE 95. SO NO PROBLEMS WITH SES LIGHTS. i SAY A GOOD CHEAP EFFECTIVE MOD.

 

OBD1 cars did not have rear o2's, so gutting the cat won't trip any lights, it will just spew out more nasty stuff out the exhaust. And it is not recommended to replace the front o2 w/ a simm, it'll just make your ecm think you have a perfect a/f ratio and could run slightly lean or rich depending on conditions.