A friend of mine called me today and said his exhaust got alot quieter. It made no sense to me but the car starts and runs, but it is a hell of alot quieter. Is this the sign of a plugged cat? I searched and didnt find a whole lot

 

ask him if he smells sulfer and if the cat glows

 

or if it feels like it's choking over 4000 rpm.

 

He said the cat and muffler are glowing hot

 

then by what that guy said I would say yes...and how do you fix this...or you cant?

 

you replace it....or if your state doesn't have emissions testing, you can get a screwdriver or long pointy object and break up the insides of the cat and shake it out. of course...you'll throw a code, but you can have it tuned out

 

plugged is spelled with two "t's" i'm drunk and i know that. Canadia is all that is fail!!!

 

When my cat was bad, it was pushing a ridiculous amount of boost. Or it said it was. haha

 

muffler glowing hot? never saw that one.

 

^^ me neither we have no emissions here can he just cut it out and replace it with streight pipe?

 

it's not pushing boost...

for clarification, exhaust gases are trying to escape out the tailpipe, but can't, so pressure builds up in the combustion chamber and when the intake valve opens, it tries to escape that way, but it runs into incoming air.

 

Only reason I said that, was because the gauge would read 17-20lbs. Of course I know it's not really boost. Just a side effect of bad kittaaay.

 

lol wut?

Yes, something is plugged in the exhaust most likely the cat.

 

if i was you for a temp fix just take a pipe... or anything long enough to reach down it ( drive it down into the cat and just keep punching at it... tones of stuff will poor out so do it so u can clean it up... but reach up in there with neddle nose, fingers, and keep punching at it till its all out. TADA fixed the problem.. now u can get a straight pipe welded in or just drive like that( looks like a cat is there, but sounds super raspy when u get on it.)

 

Ok i havent payed much attention to where the cat is on it, i'm guessing by the manifold. Can you weld in a universal magnaflow?