There's a lot of posts on "CARB" here. Do a search for keyword "carb".
Short answer: Injen:yes ; AEM:yes ; PLPending ; SRT:no ; Rod Millen:no
When it comes to CARB, you can generally expect that if the manufacturer is not in California, the product(s) will likely not get a CARB EO #. Injen, AEM, PLP are all in CA. SRT is in MD. Rod Millen is also in CA but they told me they had no plans to get a CARB EO for their intake.
Injen- yes, or at least, that is what everyone is saying about their intakes now...
AEM- i thought it was discontinued, but i guess they are still making them? I didnt know it was carb certed however.
PLP- NO. not yet.. pending.. everyone is waiting on that sticker..
SRT- NO. Promised carb cert over 1.5 years ago.. i guess its still being tested? lol...
I would suggest the K&N, PLP, or Joe Z intakes. I prefer the PLP/JOEZ style intake myself.