Looks like the guy that put my manifolds and up pipes on installed the up pipe gaskets in wrong. Dannville said that's probably what it is.
Well, take it to a competent shop next time, and dont blame ProFab for that shop's f-up.
Maybe he can just have rob adjust for leaky up pipe gaskets?
I did a boost leak test and no leaks. The truck is running better all the time. I think the guy I bought it from may have babied it too much. I don't know. Rob is going to adjust the tuning once I get some dry weather to do some data logs to get back to him. I took the muffler off today and the turbo sounds awesome. Not too loud at all and no drone in the cab. Also installed an S&B CAI.
Get Marks tunes, he built the turbo