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See through cat? 

 

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 Post subject: See through cat?
Posted: Tue Jan 27, 2009 6:08 pm 
Oompa Loompa
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Hey guys, ive been searching around but still not sure, i think my cat is slowly getting blocked, Car goes hard when it just gets to operating temp but when the cat gets real hot after booting it a bit it starts to feel sluggish, no bottom end power, and the engine bay seems to get way to hot for normal temp even when cruising. I was told the first signs of a stuffed cat is excessive engine bay temp.

I pulled the cat off( standard one, has a full system except for cat) and i couldnt see through the cat. Should the Standard cat be able to be seen through? i want to get a high flow one in the next few weeks but just wondering if this one is blocked yet
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 Post subject: Re: See through cat?
Posted: Tue Jan 27, 2009 6:55 pm 
Getting Side Ways
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No you should not be able to see through a standard cat converter.

This is a pic of the inside of a stuffed cat converter, note the "honeycomb" has fallen, letting some light through, this honeycomb is the cat material if you will. This will be all you see, but mounted properly.

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This is what a good one should look like
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 Post subject: Re: See through cat?
Posted: Tue Jan 27, 2009 7:08 pm 
Getting Side Ways
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just punch it out. (for diagnostic purposes only of course :))

 

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 Post subject: Re: See through cat?
Posted: Wed Jan 28, 2009 2:53 pm 
Oompa Loompa
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thanks guys, il only punch it out to see when i get a new one, then il just see what its like for a couple of minutes then put the good one on, punched out sounds crap and stinks
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 Post subject: Re: See through cat?
Posted: Wed Jan 28, 2009 5:17 pm 
Getting Side Ways
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thats why i said punch it out for diagnostic purposes, would save you buying a high flow.

unless your running alot of horsepower a high flow isn't neccessary.

if your car is running efficiently it shouldn't smell all that different from a standard one. and the sound just gets minutely deeper as it works as an expansion chamber.

 

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 Post subject: Re: See through cat?
Posted: Thu Jan 29, 2009 12:59 pm 
Oompa Loompa
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atm ive got 140rwkw so i thought it might help a little bit when i get my custom tune. i can get a high flow for $100 so i may aswell do it and weld it up myself. Not risking getting caught with a dodgey cat
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 Post subject: Re: See through cat?
Posted: Thu Jan 29, 2009 7:10 pm 
Getting Side Ways
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If you can do it your self then do so, becasue smashed out cats sound like a** and give no gains anyway.

The ford factory cats aren't that restrictive really, i still have mine on and dont plan on upgrading it.

 

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 Post subject: Re: See through cat?
Posted: Thu Jan 29, 2009 7:54 pm 
Getting Side Ways
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which is why i'll stress again only punch it out for diagnostic purposes if it's supected to be dodgey.
as a general rule i'd only do it if it made shakey noises when you shake it.

 

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 Post subject: Re: See through cat?
Posted: Thu Jan 29, 2009 9:25 pm 
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hi flo cats are pointless especially on a low hp vehicle, up around 400hp you might get 5hp gain with a hi flo

 

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 Post subject: Re: See through cat?
Posted: Thu Jan 29, 2009 9:27 pm 
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hi flo cats are pointless especially on a low hp vehicle, up around 400hp you might get 5hp gain with a hi flo

 

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