dont ever get n2o first. later on down the road if you choose to get forced induction (when that will happen with the 01+ civics i dont know...but thats beside the point) your n2o system wont work because you'll need a different kind of kit. At 2am my brain is a little fried so I dont remember if FI nitrous kits are dry or wet
but either way the entire system wont work with the turbo/supercharger. At least thats what I have come up with. (watch, now slo will come in and tell me im wrong. You can all point and laugh then :o )