what a difference new cats make

[shogun]

http://www.bimmerboard.com/forums/posts/440862
of course he also changed the piston rings on his 750, but now Pat finally passed the CA smog test.

What wonders me, is that there are apparently no companies in USA which sell the cat metal cores only. In Germany there are companies which repair cats for a fraction of the price of a new one (complete cat with housing), they cut off the cat housing, remove the old cat insert, weld in a new one, weld the housing, done. Usually the repaired cat is returned within 24 hours.

cat core inserts
http://www.uni-kat.de/katalog.htm

[attack eagle]

AFAIK my interpretation of the statute is that it is illegal to tamper with the cats... they either must be replaced as a whole assembly or left alone, repair is a foreign concept since it could lead to "tampering".

[Robin-535im]

AFAIK my interpretation of the statute is that it is illegal to tamper with the cats... they either must be replaced as a whole assembly or left alone, repair is a foreign concept since it could lead to "tampering".

Plus, it would make way too much sense...

BTW - who among us hasn't at one time or another opened up their cat from the top and removed the guts?

[Sam-Son]

sorta on topic anybody know where I can get some high flow cats?

[attack eagle]

Plus, it would make way too much sense...

BTW - who among us hasn't at one time or another opened up their cat from the top and removed the guts?

ME!!! ME!!!

I have 3 foot and 4 foot long Masonry bits... Just drill em out and then take it for a hard drive sans exhaust... the cat will crumble into pieces and be blown out...

*this is only what I have been told - I would never have any first hand knowledge of such an illegal and environmentally unfriendly practice, as cars are an easier target for the enviro-nazis than large industrial polluters. *

[Sam-Son]

ME!!! ME!!!

I have 3 foot and 4 foot long Masonry bits... Just drill em out and then take it for a hard drive sans exhaust... the cat will crumble into pieces and be blown out...

*this is only what I have been told - I would never have any first hand knowledge of such an illegal and environmentally unfriendly practice, as cars are an easier target for the enviro-nazis than large industrial polluters. *

To hell with that More info please I know you would never do such a thing but I would. please tell me more

[attack eagle]

If I were to do such a thing, I'd take my 4 foot masonry bit, drop the catback section and drill thru both layers of the cat element many many times from the rear opening. Like if I were going to break chunks out of it. takes little effort, just a fair bit o time.
It also adds a nice sporty growl to the stock exhaust.

[Sam-Son]

If I were to do such a thing, I'd take my 4 foot masonry bit, drop the catback section and drill thru both layers of the cat element many many times from the rear opening. Like if I were going to break chunks out of it. takes little effort, just a fair bit o time.
It also adds a nice sporty growl to the stock exhaust.

4 foot? is the cat that long?

[attack eagle]

you could probably get away with a 3 foot.

[Sam-Son]

thanks for the info...I mean I know you don't really know any of this stuff 'cause you wouldn't delve into anything in the shady side of automotive modifications