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I can tell you that my F150 Ecoboost on the stock intake with paper filter from CarQuest sees a 5% pressure drop across the filter. I can tell because the EB has a pressure sensor just inside the intake after the filter and I know the ambient air pressure. So even with no filter at all and...

This is lost on 99% of people on truck forums. I am glad someone is around to say it. Look up tractive effort. It the actual force you are applying to the pavement to move you forward. HP is another way of expressing tractive effort. The engine with greater HP can apply more force to the road...

German WWII bombers used opposed piston engines so this isnt some mysterious modern technology. I feel like if there was a solid case to be made(and it wasn't being pushed by the Saudi national oil company) it would have been implemented by now.

The one thing you are not taking into account here is tractive effort, which is the force that needs to be applied to the road to move the truck and trailer down the road. If you need 5000 lbs of force on the road to keep you moving at 70mph and you have a 32" tire, that means you are looking...