[The Dude]

I think that it's just that, the efficiency of the turbo. I wouldn't doubt that we are running our turbos at less then premium efficiencies.

If you went to a shop and ask for a turbo for X truck not running an IC and asked the same shop for a turbo for X truck (the same truck) with an IC they would most likely give you too different turbos???

So I think the answer to Waynes question is yes, for the intercooled truck they gave you the wrong turbo. (or maybe just not the "best") and with those of us that see the 100-200* drops are running higher boosts then what is considered efficient for our turbos.

Clear as mud?

I belive the max boost I can get out of my turbo is 16psi and I am running it at 14. I would like to change that to a turbo that can hit 20-22 and run it at 15.

But what do I know.