Rep Power: 0

one of the great things about california is that you have to get smog done and everyone is strict with this emissions crap. anyways the other day i got a smog (failed bc the fuel cap) and i asked the guy about new cam gear and if it would affect the smog. he said i would fail smog with a new cam but i dont know how that could be? any ideas?

 
Rep Power: 812

cam or cam gear? a mild cam wont affect anything, maybe make it leaner which would be better for smog. so long as you tune it all to ideal, it shouldn't be a problem. cam gear doesnt matter either, unless there's a specific rule that says modifying the cam timing is illegal. the cam is in the engine nobody can see it.

 
Rep Power: 324

if you have a cam gear on it modify the original cover to fit or else you wont pass the visual inspection. A stage 1 cam might pass a stage 2 cam will not pass.