Emissions crap has been on the duramax since 2001, when they first came out. Its just now with the LMM there is tons of crap that will be hard to by-pass.
I have heard it all from a 400hp twin turbo to an 8 speed allison. Its all bs right now. I mean heck the Lmm just came out a month ago.
It should be interesting
2006 Silver Birch LBZ, LT2, Extended Cab Short Bed
4" MBRP Turbo back with cat delete and 5" tip, EGR blocker plate and finger stick, Autometer Cobalt pyro and boost gauges, EFIlive, Ranchhand grill guard, 285 75 R16's, All head lights on mod.