Cat Convert

[06vzcalais]

i recently decided to upgrade my exhaust system i currently have a 2.5" cat back and did have outlaw hiflow cats 2 of these i got pulled over by the local constablry and i now only have a cat back system with factory cats noise reasons blah blah blah but the guy at the unnamed workshop reckons i should actually be running 4 CATS yes thats right 4 cat converts is this guy insane or am i just not up with the times he could also be saying this cause my new lesser flow cats are $350 each

 

[stocky]

i think some VZs did have 4 cats standard, so if yours had that many, im guessing you need to keep them all

 

[06vzcalais]

would this be for legal reasons or performance reasons cause if its just legal then maybe i can just flog out the cores in the first set with a star picket or simular sized bar weld a bit of 2.5" pipe thru the guts and abra kadabra "4" cat converts or so it would seem

 

[Troy711]

Gutted cats sound ****.

 

[impulsive]

i think you will find its something to do with euro emissions and that all late model (Jan 06 onwards) VZ alloytecs (not sure bout the 8's) had to comply with tougher emission standards for exporting, thus holden introduced 4 cats..

 

[Not_An_Abba_Fan]

No, the VZ V6 only had 2 cats, the other two look like cats but are in fact resonators. This guy is full of ****. (the exhaust shop guy that is)

 

[monaro327]

i agree with above sounds like rubbish my ve doesn't have 4 cats.

 

[impulsive]

i honestly never thought they did, but someone once fed me a load of bs telling me due to euro emissions etc etc.. i thought it was bs aswell

 

[monaro327]

the only thing that came from euro emissions was the extra oxy sensors to make sure the cats are operating effiectively right?

 

[impulsive]

yeah there are definatley 4 O2 sensors on my car, so maybe i got a little confused bwahaha sorry guys