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I've been looking at getting a highflow cat before i get a tune, but what brands are legal? I'm talking more about the metal core ones as i guess all the ceramic ones are legal.

I have been looking at the venom ones and magnaflow, they are both priced about the same, leaning more towards the venom but it doesnt say if its epa legal where as the magnaflow states that it is.

Does anyone know if the venom ones are legal? No point getting a cat only to possibly get epa'd and mass fines etc etc.

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Anything above 200CPI legal no matter the brand. The difference between a high flow cat and a straight pipe is minimal at best and when the police can now road side test for a cat would you be willing to pay the huge fine?

+1, i have the "Metal cat" metal cat which has adr and epa codes lazered on the body

Just get an old one and bash a pipe thru the middle cut an weld the pipe to the flanges and bolt it up the only way they can tell is with a temp gun on a hoist looks the part I have mine like that and have passed pits with it lol

we know this base.

Some people want to Pass the (IM240 test) it is an emission test done at the EPA. nothing like having a 400kw RB on e85 passing emissions

you will need a cat to pass this test even if the emissions are fine without one.

i was looking at running a XR6 Turbo cat on my exhaust for emission test. :ph34r:

then have a second exhaust as mentioned

I think they have done tests before between a 200cpi and straight pipe and found the difference to be less then a percent. 1% for 10k fine no thanks. Also Base308 do realise police have been known to carry out road side tests before.

Edited by blcklncer

Paul not sure how to answer as if the question is related to 'what is an EPA legal cat' that's different to 'what cat can I pass emissons with'. When I passed all they did was check the gas readings not the cat itself. Maybe ask whoever is doing your emissions tune what they prefer, its in the tune probably more so than the cat.

Edited by Scooby

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