I've got an 04 Pete 379. C15 cat 13 speed. Turned up all the way. How do I delete or bypass the egr and where is it. Will I gain any by doing it. And what could it hurt on my motor. It's a new motor with about 30 k miles on it.

CAT doesn't have egr like Detroit and Cummins. It uses ACERT which is quite different but accomplishes the same result. Other than that, and it uses a twin turbo setup, I know nothing about it.

04 could also be a MBN. No egr there either.