I should be picking up a car in the next couple of weeks with a LET tune on it. Are all these tunes custom per the car or are most of them pretty standard? I emailed Eurocharged, but I would guess it will take a while to get a response.

Also, are most of these tunes built for 91 octane...or for race gas?

Just curious what I am getting myself into with this car. I am a big fan of street AND track cars...and if these tunes are pretty extreme (like needing 93 or higher octane or shortening the life of the engine) I may have to get it retuned.

Just looking for experiences good or bad...