No boost!

[Chungo]

While driving home from a few days of camping in the mountains yesterday I had a odd thing happen.
I was towing our camper (36' 7500 lbs) and went to pass a small rav4, when I got along side I heard a load "POP" and noticed a puff of black smoke blow out the tailpipe.
I got to the side of the road to check things out, inter cooler boots etc but nothing seemed to be blow off or torn. Pulled a P0401 code out (egr insufficient flow I believe). On a whim reloaded my tune, cleared the code and started off again.
Truck had no boost at all, 0!!! And smoked like a chimney!!! Limped the truck home, had no choice being out in the middle of nowhere!!!
While parking the trailer the check engine light came on again and the P0401 code was there again.
The truck is an 08 job #1, (206000km)deleted with Spartan and I was running the 210 tow tune when this happened. I still have egrs on the truck.
Can a failure in the egr cause the truck to lose boost completely??? Or am I looking at a turbo problem???
Truck is booked to go into the shop on Tuesday but I was looking for some more insight?
Thanks!!!



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[APEX 06]

Hole in a boost tube somewhere

[Chungo]

That's what I thought too and you are right. Bottom tube on drivers side. The finger poke on the side of the road didn't show me anything. Been recovering from a punctured lung and 5 broken ribs, convinced the wife to drive the truck over me while I laid on the doggy beds and got it fixed up, thanks for convincing me to take a second look before bringing it in to the shop!


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[APEX 06]

There never big holes that are easy to fine, they always have to be a small I the hards place to see. Lol