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get a ballistic 5" 100 cpi metal cat from sure flow exhaust in ingleburn NSW

i got one on my gtr with 4" in and out very well made and flows very well. from memory it was around $200 or something

all I'm saying is that low cpi count metal cats are cool, it's just daft to go to the expense if it dosen't meet some kind of basic emissions requirement!

having any cat will meet some emission requirement, it may not be enough but its at least an attempt to meet them

Hvaing none means you u meet no emission requirement whatsoever...

I dont know how often you get roadworthy buses set up in woop woop but they are quite frequent here...

And some attempt is better than none...

And why do u need all that extra awesome exhaust flow when you are only doing 100kph anyway...

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