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Thank you, been reading diesel turbo theory literature and it is coming together. Also glad my "m1009" came with a 700r4 from the Navy.

Ok it's all coming together now. So in gas turbo setups each atmosphere of boost roughly adds the amount of HP the engine has NA. Does that generalization not ring true for turbo diesels?

Thanks for the explanation, in my mind I was imagining a mechanism to add fuel based on boost level, which is clearly not the case. So people turn the pump up a 1/4 turn for a little extra power NA, how much is it turned up for a turbo swap?

For example when one adds a turbo to a 6.2, what mechanism requests more fuel based on boost levels?

So I have built several gas turbo engines, and all requires a boost reference to allow the ecu to determine how much more fuel to add to maintain the requested AFR. On a 6.2/6.5 turbo diesel, I don't see how this works. I don't see a boost reference on the injector pump and no mechanical...