Anyone use Ebay High flow cats??

**5abivt** · 07-22-2009, 07:13 PM

I see some on there for as low as $30 !! anyone use any cheapo high flow or repacement cats and pass emssions? My 01 has a Corsa cat back but I want to do headers and cats. i still want it quiet and emissions legal but only if I can do this really cheap.

**Hi-Po** · 07-22-2009, 07:39 PM

Most, if not all High flow cat's will pop P0420 and p0430 Catalyst System Low effiency.

Basically means those high flow Cats will not do what the OEM rear 02 sensors think they should.

**5abivt** · 07-23-2009, 01:21 AM

ok so no go with cheapo cats or are you saying Random tech cats will do the same?

I cant help but cringe when I look below and see the tiny weeny pipe coming from the stock cat. I would really like to put headers and higher flow cats I know it would free up some hp but I want to have the noise reduction cats provide and be emissions compliant.

**Hi-Po** · 07-23-2009, 01:58 AM

Originally Posted by 5abivt

ok so no go with cheapo cats or are you saying Random tech cats will do the same?

I cant help but cringe when I look below and see the tiny weeny pipe coming from the stock cat. I would really like to put headers and higher flow cats I know it would free up some hp but I want to have the noise reduction cats provide and be emissions compliant.

You can try. Im not saying 100% it will pop a code, just that there is a chance of it.