[blackhat]

I bought a used 2000 impala last year and it turns out that it is a california emissions vehicle. I was wondering what the difference was between the california version and the other 49 states. I suspect that it is in the cat and the computer but I am not sure.

 

[capricewiz]

your car has an electronic air pump, the others don't require them

 

[blackhat]

Is that the only difference? And would it effect my car's performance?

 

[capricewiz]

not really, but the computer is so sensitive it'll set the check engine light if you have a problem with the air pump.