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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  • Marcr My wife and I mostly work from home (or use public transit), the kid is grown, and we no longer do road trips of more than 150 miles or so. Our one car mostly gets used for local errands and the occasional airport pickup. The first non-Tesla, non-Mini, non-Fiat, non-Kia/Hyundai, non-GM (I do have my biases) small fun-to-drive hatchback EV with 200+ mile range, instrument display behind the wheel where it belongs and actual knobs for oft-used functions for under $35K will get our money. What we really want is a proper 21st century equivalent of the original Honda Civic. The Volvo EX30 is close and may end up being the compromise choice.
  • Mebgardner I test drove a 2023 2.5 Rav4 last year. I passed on it because it was a very noisy interior, and handled poorly on uneven pavement (filled potholes), which Tucson has many. Very little acoustic padding mean you talk loudly above 55 mph. The forums were also talking about how the roof leaks from not properly sealed roof rack holes, and door windows leaking into the lower door interior. I did not stick around to find out if all that was true. No talk about engine troubles though, this is new info to me.
  • Dave Holzman '08 Civic (stick) that I bought used 1/31/12 with 35k on the clock. Now at 159k.It runs as nicely as it did when I bought it. I love the feel of the car. The most expensive replacement was the AC compressor, I think, but something to do with the AC that went at 80k and cost $1300 to replace. It's had more stuff replaced than I expected, but not enough to make me want to ditch a car that I truly enjoy driving.
  • ToolGuy Let's review: I am a poor unsuccessful loser. Any car company which introduced an EV which I could afford would earn my contempt. Of course I would buy it, but I wouldn't respect them. 😉
  • ToolGuy Correct answer is the one that isn't a Honda.