Cats?

[UTA LS]

I was curious to see if anyone knew the laws associated with moving catalytic converters on cars that are street driven in the US. I am seriously considering a large single turbo for my LS400 and it would be easiest if I could place both cats on one side and just have a single downpipe split into the two. I do know that I can not get rid of one of the cats since it was originally designed to have one cat per bank but I do not know if I have to keep them in the same spot.

 

[Lextreme II]

U still can have cat/s, but some other place along with the exhaust... i run a single and i have two cats....

 

[UTA LS]

Do you have any pictures of this setup, or is the setup you are talking about the single turbo project you have on your website?

 

[88Alltrac]

I've passed emissions running way more rich then 11:1 without a cat too. Just depends on if the emission place is a bunch of up-tight jerks or not. There is the required visual inspection, which they seem to be relaxed about.

 

[SCV8]

Turbos have a nice way of helping the emissions don't they, stock(retarded) timing is a big factor.