Comments by "Greg Wayne" (@friguy4444) on "How much horsepower has our V10 BMW M5 Touring lost in 15 years?" video.

  1. So why no tuning after the air box?? Next video maybe??
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  2. Wait so the Dyno numbers are at the crank that means the car is making approximately 15% or so above the stated HP from the factory?? Or did they adjust the numbers afterwards to reflect the "At the crank" numbers? They don't really say what they did to calculate the numbers they are showing. But I suspected the numbers would be what the factory said or better as he has already done all the maintenance.
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  3. I'm not completely buying into the "Eventuri" explanation of what BMW in particular aims for at the factory when they design their air boxes. For some cars yes I believe his explanation is right on target. But when it comes to performance vehicles that's just not the case. Eg: The E46 M3 CSL. That air box was not only designed with "Quietness and regulations" in mind. Besides what are the "Regulations" on an air box?? Are there any other than "Clean the intake air" and is that even a "regulation"? I know the CSL air box is coveted by almost everyone but is so expensive few can afford it. I must say though he has sold me on his idea of the Venturi effect air box. At least it seems like it should improve air velocity.
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