I've searched through quite a previous few posts, but I haven't yet come across definitive answers to a few questions regarding pre-cats. 1. Is it possible to remove the pre-cats from a CS (i.e. use 360 Challenge or European headers)? 2. If you remove the pre-cats, will you definitely end up with the CEL coming on? 3. Is it true that most exhaust emissions are removed by the pre-cats?...if so, I"m guessing going that route would definitely cause the car to fail a CA smog check. I'd love to be able to get the European exhaust sound while still running cats, I'm just not sure how much of a headache it would be to get there. Thanks in advance for any info.