2005 F-350 DRW 6.0 36K miles

Only mod is turbo back monster duals. No Tuner.

At idle and acceleration I have been getting quite a bit of white smoke that smells like fuel.

Checked-
No Loss Of Coolant
No Pucking
No Oil Burn
No Leaks
No Apparent Power Loss And Idles Smooth

I am suspecting I may have a fuel injector issue but it is intermittent. I do not drive the truck every day but when I do I am usually towing. I want to take it too the dealer but when I decide to do it it isn’t smoking. I have not checked for codes or had it too the dealer since 2006. I have not had any issues other than replacing the vacuum pump for the climate system. I would really like a pro's opinion before I take it too the dealer. Any Help would be appreciated. I have searched the forum until; I'm blue in the face and it seems like everyone’s problem is a little different.