Spinning Your Wheels: Here's Why Dyno Results Are Incomplete and Useless

The release of the Civic Type R has created a lot of buzz. The recent media launch generated plenty of opinions as to its performance, including some reviewers who believe Honda has underrated the CTR in the same manner it has done with the Accord V6 in the past.

Their speculation seemed to be proven true as a video released from a shop in Puerto Rico showed the car making 301 wheel horsepower. Many outlets reported on the dyno test and, while some showed the data with a little skepticism thrown in, others went all in and told us that the CTR has hidden horsepower.

The real truth behind the dyno test is that it is valueless. We do not have any data on its calibration or the weather, and the dyno operator could have applied any correction factor on the data to boost the results. This is not an isolated case in reporting sketchy dyno results, as I see it multiple times per month from various outlets and, in just about every case, the data and reporting are meaningless.

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Piston Slap: Focusing on Turbo 93 Octane Tunes?

Mark writes:

Sajeev,

Thanks for the recent advice on winter tires & wheels for my new Focus ST. I took delivery of the car two weeks ago and I’m having a blast. The first thing I did when I got it home was take Bark M’s advice and sign up for the Octane Academy.

So here’s another question: What’s your take on fuel octane and the ST?

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  • MaintenanceCosts The Jeep 4xes are impressive vehicles, even after accounting for the expected Stellantis/FCA lack of reliability. A Wrangler is not of any use to me but this powertrain in a Grand Cherokee L will be on my test-drive list when it inevitably happens.I just wish the gas engine were something other than a coarse and ugly-sounding four. These cars with either the Pentastar or the six-pot Hurricane would rocket right to the top of the list, although I'm sure they would sacrifice a couple of mpg when running on gas.
  • Mike Beranek The suicide door T-Bird in blue is a stunner. I love the look of that car.
  • Cprescott Interesting car. Even in its current condition it looks better than any Honduh made in the last decade. Honduhs already come with a built in junkyard designed look - mishmash of elements that don't work well together.
  • Arthur Dailey Sigh ............. now we are getting to the 'interesting' part.1st tier PLC: Mark III, IV, V and Eldorado. 2nd tier: Toronado, T-Bird, Riviera, Cougar. 3rd tier: Regal, Gran Torino Elite, Cordoba, Cutlass Supreme, Grand Prix, Monte Carlo.
  • Cprescott If you own one of these, the insurance company should refuse to fix any external damage since that IMPROVES the looks. Bone stock, it is hideous.