Hi, I am wondering if I could use a federal rated catalytic on a California emissions rated vehicle. I do not live in California so as far as state requirements that's not a problem. My main questions is will the check engine light come on being though the vehicle is set up to me more strict with commissions being though it is California rated? I would just go with a California magnaflow cat but they are not readily available. The federal cats from magnaflow are much easier for me to get. My cat as well as the muffler are 3 in.