So I bought my '04 about a week ago and it has 31K on it. I thought I felt a little bit of a miss pulling away from a stop and after I installed the 4" MBRP exhaust I can now HEAR a little burble from the exhaust the same time I feel it miss. Is this an injector issue, or what they feel like if there is one or two bad? I already set up an appointment w/ the dealer for next week. Will they raise hell with the exhaust?

Also, it will blow some blue smoke about the same time. The rest of the time even at WOT the exhaust is mostly unnoticable.

Is this your first diesel? Any power adders? Any other info on the truck would help.

The dealer didn't seem to care about our exhaust system, 4" straight piped.

Not my first diesel, but my first Duramax. No power adders as of yet. Its stock other that the exhaust and the Bully Dog stage 1 Allison kit I put in last week.