Rust on the brake rotors? You call that bad shape? That will happen from sitting there for a few days here in Indiana. As for being able to rev up as far as you want in "N" which Im assuming you mean Neutral, that's part of having a manual transaxle. I know the auto's have a rev limiter in park and neutral. As for it dying up in the 4k mile range, could be a few different things. Only 22k miles on the car, I can't imagine it having anymore abuse than what my 00 CSVT had on it when mine was at 22k. I bought mine new and have been giving her hell ever since. Im not sure if the secondaries would be the problem. Id say a full tune up and possibally a new cat. I wouldn't think it would be a low octane problem but maybe the dealer got the car a month ago or so and threw some 87 octane in or something and didn't know any better. Sounds like something the dealership would have done that I worked at.
