Question Regarding Cats

[seannatt]

I am putting an EFI 5ltr into my VH SLe and i was wondering what the go with cats are. Because my vehicle didnt come with them from the factory do i shouldnt have to run cats or because the motor is out of a vs do i have too to meet emissions?

Sounds a bit more confusing then what it is i just cant word it right.

Thanks

[BowTie]

I understand your question, but I think the legalities of it just don't matter.

It's about doing the right thing.

If you are using unleaded then the right thing to do is fit a cat, no matter what the law says.

[hakhawk]

you have to meet emissions from the vehicle the motor came out of. so yes, you need a cat.

[Sabbath']

Think about it, the engine that was originally in the VH didnt need a cat. But a VS does run a cat. Now, it's not the chassis that would require you to not run a cat. It's the engine.

But hey, it's only a $10,000 fine if you make the wrong choice.

[seannatt]

Nah i wa always going to i was just wondering what the legalties stood. I thought i would have to but i wasnt sure. my mate has a HZ tonner with an injected 5ltr in it but its a 308 with 304 heads and he doesnt run a cat.

[hakhawk]

Nah i wa always going to i was just wondering what the legalties stood. I thought i would have to but i wasnt sure. my mate has a HZ tonner with an injected 5ltr in it but its a 308 with 304 heads and he doesnt run a cat.

thats because hes using a 308 block that was probably in the car to begin with. you could do the same if you wanted to goto the effort.

[Not_An_Abba_Fan]

What ever you do you have to meet the ADR's of the latest thing, whether it is the engine or the car.

Retro fitting an earlier pre-cat engine into a car that had a cat would still require a cat.

So legally, yes, because the VS 5.0L had a cat from factory, it requires a cat no matter what it is fitted to. Unless it is a commercial vehicle.