No experience with cheating smog myself

. I just stay legal and don't have to worry. There are plenty who do cheat smog, but I'd be careful w/o getting help/tips from them first.
If you still have all your emissions hardware you could always pop in a performance catalytic converter, get a major tune-up, fill up with Chevron supreme and warm up your car before the smog test. Might not be enough in some cases, though.