Miltek downpipe exhaust?!

[Dolphin_Vic]

are they California Smog Legal?

NE1 knows?

[Dolphin_Vic]

no one knows? or just a stupid question?

[jimmyrecluse]

I heard it shouldnt affect smog.

someone back east did it with no problems. not even close to failing.

[jimmyrecluse]

Got more info for you.

Its possible they will fail. You went from 4 cats to 2 high flow however someone has passed back east like I mentioned with them but Ca. I cant say for sure... definitley will fail if visual is involved but I doubt anyone will be pulling off the plastic underneath to check.

[vananron]

Any adjustment with the cat, or pre-cat is instantly illegal. But with a creative exhaust system, you might be able to beat the smog rating. But as a rule..... headers, downpipes, and cats are illegal to adjust. Not that I listen, I used to have an S2000 with pure straights on it.

[jimmyrecluse]

Originally posted by vananron
Any adjustment with the cat, or pre-cat is instantly illegal. But with a creative exhaust system, you might be able to beat the smog rating. But as a rule..... headers, downpipes, and cats are illegal to adjust. Not that I listen, I used to have an S2000 with pure straights on it.

^what I ws trying to say. they are only legal if they are carb approved and they are not.

With Labree or Milltek you go from 4 cats to 2 hi flow cats.

[vananron]

Yeah, but as far as I know, there is no such thing as a CARB approved aftermarket header or downpipe for any car.

[astris]

Originally posted by vananron
Yeah, but as far as I know, there is no such thing as a CARB approved aftermarket header or downpipe for any car.

Not true. There are many legal header applications, even in California. I know of tons of people with headers on their trucks. The headers maintain all the emission an o2 sensing equiptment. JBA headers is a couple miles from my house and they have tons of applications.

Downpipes are a different story. If all 4 cats were replaced with highflow cats it might be different. Anytime a cat is removed there will be a problem.

[Dolphin_Vic]

for my understanding, the 1.8T miltek is CA cat legal...

[jimmyrecluse]

Some are legal. You need to meet strict standards for CARB approval and loosing a couple of cats isnt one of them.

[Dolphin_Vic]

how do I check?

[jimmyrecluse]

They come with carb stickers and / or stamps on the products.

[Dolphin_Vic]

I have the CAT plate on the exhaust

[jimmyrecluse]

It will say CARB and have some numbers on it.