431 was the highest? I guess nobody showed up with a Hellcat.
On May 21 we held a special dyno day at the Mach V Motorsports facility. Lots of cool cars showed up, but who ended up making the most power? It was a 2009 Audi S5. These cars came from the factory with a naturally aspirated 4.2-liter V8 rated at 354 horsepower. This one made 431 all-wheel horsepower thanks to a JHM supercharger kit based on a Vortech unit.
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431 was the highest? I guess nobody showed up with a Hellcat.
That's a cheat. Really, you want the car with the greatest percentage improvement. This Audi scores 21.8%.
The Miata I drove to work today is about 270% over stock.
Keith Tanner wrote: That's a cheat. Really, you want the car with the greatest percentage improvement. This Audi scores 21.8%. The Miata I drove to work today is about 270% over stock.
I like that idea but if you use that scale then you need to class engine mods and engine swaps differently. My Camaro is at %456 but it's got a 496 stroker motor in place of the wheezing 307 that GM put in it originally.
Doesn't matter, you can't walk into a showroom and just buy one. There's no such thing as a Showroom Stock class at a dyno day 
Don't forget that a jump from 50 to 100 hp is a 100% gain, not 200%.
431 ain't terribly impressive for a dyno day. my old rx7 had more than that.
I'm with Keith.
By that standard, my work truck would have annihilated everyone there.
Nah, overall power wins at dyno days in my book. Percent improvement will spark up conversations and a good pat on the back, but the final number rules!
a 350hp 1.8 miata is much more impressive than a 400hp v8 in my book.
Keith Tanner wrote: That's a cheat. Really, you want the car with the greatest percentage improvement.
That's like saying the "greatest percentage improvement" in time should win the race. 
That being said, I'd probably find greatest percentage improvement more interesting at a dyno day, in much the same way that I find PAX more interesting than raw times at autox.
I'm with Keith. But I think if you're handing out awards it should be one for each category. % gained, highest overall, and then a third category: one that is a disbelief category. As in "I can't believe this engine made that much power at all and is still running."
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