Quote:
Originally Posted by aerohead
I've provided a checklisted, item by item evolution of the phenomena, according to the science. Where one takes it is up to the individual.
Road testing isn't necessary. The photograph provides all the necessary information to make the verdict.
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Road testing; who needs it? And fuel economy testing; better to just believe that something works. Why test mods at all? Faith is all you need apparently.
The big thing on Priuschat these days is a VVT solenoid called the "Red Bullet." Many users have installed one on their cars and made ridiculous claims, such as one person who insists that it improved his fuel economy by 15 mpg. Yet no one who has installed one can explain what it does, not even the person selling them; they can't even be bothered to look up the (Toyota-available and published online) solenoid schematic and apply a little thought, let alone do a controlled test.
Quote:
Originally Posted by aerohead
A look at the VW XL1 undergoing smoke flow testing will provide a look at what attached flow actually appears like.
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Oh, you mean like this?
Hey, wait a minute! That shows flow detachment just like the Porsche! It's almost as if the flow over most of the car is
turbulent and the streamlines are subject to random high-frequency fluctuation that isn't captured by a single still photograph. No, that couldn't be....