While I’m always open to new information, everything I’ve learned in the last 25~ years of diesel ownership tells me otherwise. I’ll list what I believe to be true.
Diesel engines run cooler in a lean air/fuel condition.
Diesel engines run hotter in a rich air/fuel condition. Adding more fuel creates more heat regardless of induction type.
One benefit of a turbocharger is to clear the combustion chamber of hot exhaust gases with the relatively cooler charge air thus lowering EGT. I’ve got a pyrometer on my modified 12 Valve CTD and before I installed a high flow turbo I really had to watch the EGT’s when towing in the mountains.
If anyone does this mod and has an IR gun they could shoot the exhaust manifold temp before and after test runs as a quick way to see what the temps are both pre & post mod.