Well for some reason the duramax forum has lagged behind the other two for quite some time and they've all 3 been around for about a year now. I am a moderator over on the PSD forum and we've got a lot of features that this one does not have. Plans are in the works to wake this forum up and get people more active. A big reason why this forum isn't as large or active as the other two is that the duramax is only about 5 years old, whereas the powerstroke has been around since '94, and the cummins since '89......there's a lot larger pool of people out there in those engines, so there's naturally going to be more members. The best way to spread is to make up a flyer and lay it on other d-max powered vehicles I think.