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Ron commented at my blog post; I offered the following reply, I'm repeating it here in case he reads here and not there, sorry for the length:
There are several ways to test the Groove. As I've stated repeatedly, I'll be happy to participate by designing an appropriate experimental protocol and gathering and analyzing the data.
However, my time is all I'm willing to donate, the vehicles, the modifications, test track location rental, etc. will have to come from elsewhere.
On the Ecomodder site, a-b-a testing is the gold standard because they typically don't have the facilities to utilize identical vehicles, fuel cells, multiple test runs, etc. because they (we) are amateurs and hobbyists not selling a product.
A-b-a testing involves testing a given vehicle and noting the fuel economy, modifying it and doing the same, and then undoing the modification and retesting. Such a protocol could be implemented by running a vehicle dry, adding a measured five gallons on a controlled track, driving until empty, and logging the mileage. Remove the stock throttle body, add a "Grooved" body, repeat. Replace with the stock body, repeat.
While this would not provide reliable statistical data (blind testing, mean fuel economy with and without, standard deviation, confidence level of null hypothesis rejection, etc.), with the sorts of improvement you are claiming it should be indicative as to whether the results are plausible.
This constitutes repeatable evidence. Testimonials, no matter how heart felt, do not. You can find testimonials for "holographic bracelets," faith healing, and many others all over the internet. As I mentioned in the Ecomodder blog post, people will testify that Uri Geller can bend spoons with his mind.
If you will send me, via email, at tio540s1 at gmail dot com, the budget you're willing to invest in testing, I'll see if I can design a convincing test within that budget.
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