So, driving around the other day I hear this dragging sound from beneath the car. It was a long metal tube that was connected to the cat. Popping the hood I notice that the end of the tube goes into a rubber hose that leads to the engine. I unscrewed the clamp and removed the tube. Immeadiately It seems that the car
has more power and quicker acceleration. So, my question is what was that thing, and do I need to have it put back on? Thanks.

 

Sounds like the Air hose from the Air pump to the Cat. You only need it on for emmissions purposes.

If you run the car with cats and no air pump, you will fry the cats. Investing in a little money into an exhaust system wouldn't hurt - and give a generous power increase.

 

What year is your car?

 

Hit his profile button and you'll see it's an '84...

 

mar3 on it. you can leave it off if you replace the cat. otherwise your cat will **** and it will kill performance and driveability.

 

at least when cats **** they bury it. Wait- what were we talking about? *L*

 

my cat uncovers old poop to bury new poop, lol.

 

hahahaahah lol@jeremy

 

guys, (especially MANNTIS ) you're Post-Whoring again... better watch it, they might BAN you!?!?!


BIG BROTHER IS WATCHING!!!



Jeff

 

thats a pipe from the air pump. Removing it will give you an exhaust leak.. i highly doubt power was increased by removing the pipe.. someone correct me if im wrong

 

Unless the cat is clogged, then it may have helped a bit.

If its a GSL-SE, the 6 ports may cease to function with that unhooked.

 

im running the cat without the air pump.. and wouldnt be surised if it burnt out by now.
what hapens if it is burn out? more or less flow??

 

the Aussie 1st gens dont have cats!! your car would have a heat exchanger that looks a little like a cat, ive even heard exhaust shop guys call it a cat before!!

 

Yeah, if your cat aint gettin no darn air, than it may blow off a section of your exhaust if you backfire!!!! Thats what i think happend to me, lol.

 

i have a cat on mine when i got the car it had extractors already and a cat on the end. and the cold air pump was redirected to the cat..

and it sure does back fire.. used to get flames with the old exhaust, now i just get the bang

 

My air pump's line that goes to the cats was cut when I got my car. The cats were so clogged from it that it actually kept the car from running. It was a bitch trying to figure out what the problem was, since I didn't know very much at all about 1st gens when I bought my car. But then again, I got a sweet deal on a car that really didnt have anything wrong because of it

 

mine is cinched shut...guess i need to make a trip to the junkyard

 

might have to do the old 'end of the broom stick rammed up the cat' trick to make sure its fully unblocked...

 

Once, there was a cat, and it was positioned just to the rear of my exhaust manifold...when i went to go start the engine, the cat got sucked into the fan and I had ALOT of detailing to do.

 

EWWWWWW! thats grose.. lol

 

The fan doesn't suck; it blows.