This is a re-occurring question.

The N.A. Engines have Injectors that are set at a lower opening/pop pressure than the Turbo Engines.

I believe the Turbo Engines have a higher opening/pop pressure because they have to Inject Fuel into higher compressed/dense Air in the Cylinders.

Other than the opening/pop pressure the Injectors are the same.

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84 300D, 82 Volvo 244Gl Diesel