High flow cat

[scouser king]

G'day all
I am getting my exhust do in the week or so iam thinking about using a high flow cat.I have looked around and found load different ones out.Any one no a brand that MEATS AUSTRLIAN LAWS?

[1991_Vn2nV]

What size exhaust? The stock cat is 2.5", so theres only a need to upgrade if you are using 3" piping.

[Morton]

Really? Because my cat was 2.25" at the flanges.

I bought a Redback high-flow cat, and it changed the note of my exhaust so much for the better

[Cobez]

There is meat in our laws?

[scouser king]

There is meat in our laws?

ha ha very funny

[scouser king]

What size exhaust? The stock cat is 2.5", so theres only a need to upgrade if you are using 3" piping.

2.5 now but thinking of 3'', due to putting a supercharger on

[1991_Vn2nV]

Really? Because my cat was 2.25" at the flanges.

I bought a Redback high-flow cat, and it changed the note of my exhaust so much for the better

I was just told that the internal core of a VN-VR cat is about the same size as the internal diameter of a 2.5" exhuast pipe (as a 2.5" exhaust is the measurement of the external diameter of the pipe, not internal).

Perhaps check it out, but either way you only need it if the pipe entering the cat is larger than the internal diameter of the cat. It doesn't matter what size the exhaust is from the cat back, if its only got 2.25" piping entering the cat.

[Morton]

All I know is that my cat was 2.25" internal at the flanges So if you have a 2.5" exhaust system (including pipework from the header end), then you need a bigger cat. It made a significant difference to my car, and I'm not very sensitive to changes

[Not_An_Abba_Fan]

The Magna Flow cats are OBD II EPA compliant. I can do you a good price on one.

[scouser king]

The Magna Flow cats are OBD II EPA compliant. I can do you a good price on one.

money is bit short at min,so i had put on hold for month thanks away.