24 or 12 valve

[TheNatural31]

why turn down a truck? maybe I'm just an old 12 valve guy, but on my CR's, I've never really adjusted the tunes... once I found one I liked, I left it

Why, because towing 18k with one that is "turned up" does not coincide very well?

I guess we would know more if the OP learned how to state what the hell he wanted to do with the 12v/24v. Other than that, if this question must be asked I really don't think CompD is the place for you??