Okay, to boss hoss, for what I'm talking about, it doesn't matter what the diesel is making for power, a raptor can barely keep traction at full throttle, you think more power is gonna help that? Second is that the raptor's front end is tipping the edge of too heavy as it is with the 6.2L, you think tossing another 500-600 pounds up there would help? Diesel engines are extremely heavy for their size, because they have to be able to contain the extra power there is in diesel fuel and the extreme compression ratios diesels run at compared to gas engines, the extent you would have to modify a diesel truck to be able to compete with a stock raptor offroad, you'd be better off buying the raptor and putting that money into the engine
And to wanderfalk, diesels were built to run under load all the time, the basic principles of a big rig diesel and even the smallest commuter diesel are the same, the truck must be put under full load and boost to have all the oil seals work properly, this is why turbo failures are very common on the light duty diesels (f-250, Chevy 2500, any of them), also, diesel engines run without a throttle body, however much air each cylinder can possibly intake per revolution is brought into the cylinder every revolution, whether you're at low fuel pedal positions or high fuel pedal positions, when the engine is not under load it does not produce enough heat for the oil and piston rings to do their job, the most wear on a gas engine is when it is first started up, the most wear on a diesel engine is when it is idling
, both of those conditions are due to low engine temperatures, light duty diesels are built to almost the same standards as the heavy duty diesel engines in big rigs, which can run for millions of miles, a properly run and maintained light duty diesel will last for half a million miles with little to no problems
One last thing, black smoke does not equal power, black smoke is caused by too much fuel being dumped into the cylinder for it to burn properly, if there's more fuel than the air can use, it causes more air and fuel that would've burned properly to not burn properly, which results in less power than if the exact amount of fuel needed were put into the cylinder