Q: the buddy club spec 3 or the pro-spec.... do they both pass the smog and are they good with the gas saving....
A: It all depends on your taste Spec 3 http://www.youtube.com/watch?v=lPfN8tLNrIE Pro Spec http://www.youtube.com/watch?v=yCGM8aJV6fM from the vids the spec 3 sound quieter. I like the pro spec better.