does any one know if it is possible to pass the smog test with a JDM 2.5 in. collector header with a 2.5 in. cat and a 2.5 in. exhaust?? i'm not worried about the visual inspection, but as long as i pass the actual test....that's all i care about...anyone have any experiences??

 

Two of my friends have done it. As long as your cat is in good shape and your ecu is stock you'll be fine.

 

I've got all you mentioned and have passed with no problems, too.

 

Ive been thinking of getting a JDM header as well. Its good to know that ill be able to pass emissions. So hows your performance with this header and what do you have for the rest of your set up.

 

Really?? i heard that with CA emissions, you can't pass with the 2.5" collector. which is why DC sports JDM 4-1 isn't CARB legal

 

that's what i heard too...i live in Cali....damn...maybe i should just go with 2.25 all around....(i could save alot of money)...