Not for nothing, but PaulE helped me immensely when I got my ACERT. I listened to him and a few others and never spent a dime at Cat and you can't get anything for a dime there.
cracked bellow and a leak at a hose from compressor to manifold. rerated to 550 while i was there, now i think it needs an overhead done the boost line was clogged at the manifold which was why i saw only 20 lbs loadin humvees for bragg in the morning so we will see how it does