Originally Posted by
gtstorey
You really don't know what is relevant. You don't even specify what your ECM came from. Even if someone was inclined to provide you with a start up tune, they need your existing tune to make changes too to insure that it is compatible with your ECM.
Tuning with HPT is not grab a tune and download it and go, at least not with the GM stuff. And while the repository files can be used for comparison, they are stock files that won't work for your modified setup, even if you particular ECM was known.