Several K ohms per foot IS a normal expected value. The question is do the numbers jive with each other? same length wires similar resistance? Longer wire, more K ohms. shorter wire, less K ohms? Of course there's the old adage "when in doubt throw it out". Dubious test results = poor performance. As far as an intake is concerned I would clean and make sure the one you have has no leaks and run with it, the cold air intake stuff more often than not reduces performance (undoubtedly SOMEONE out there will will try to say otherwise but I've had firsthand dyno experience with many types, and they sure don't convince me). Chipping is a good way to go, exhaust I'd stick with cat back only (again lose the backpressure, the cylinders can't properly scavenge and the air fuel ratio gets diluted and you lose power). The systems on these cars were so well designed to start with there isn't really a whole lot of room for improvements, not without BIG money anyway. Performance coils? Again I'm not convinced, all you're talking about is maybe a few extra wraps on the secondary side and a minor increase of 5-6 KV on a system that's already shooting 15-20 KV, these cars don't run 12 to 1 compression, 15-20 is more than adequate. Now when you start talking forced induction......that's a COMPLETELY different conversation.