So years ago when I bought my 04 I got an SCT with it with a hot and cold tune. It seemed to be a pretty good one as the car put down 480 hp at the tires and 530 ft-lbs with just a catback and a K&N. That being said, I think I'm fairly convinced the tune is for 93 octane, which is not readily available around me. I'm debating trying to get something that's more compatible with 91 and know places like Roe Racing and others have some canned setups. I realize an actual dyno tune would be better, but wondering what people's experience has been with tunes like these. I could always keep my 93 tune since I have it on the SCT already. I believe I can put 3 tunes on it, so I've got room for a 91 setup and could swap back and forth if I really wanted to. Also just debating going completely stock, but haven't really decided on that. The only problem with that is I don't think I actually have a stock tune anywhere. Long story short I think two different programmers were used on my car and the one I have saved the "stock" tune as what was already on the car, which I think was modified.