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Originally Posted by BAN SUVS
You keep attempting to discredit a dyno for being a "tool" when that's all ANYTHING is, including one's experience.
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I am in no way attempting to discredit it, in fact I have repeatedly mentioned it's value.
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Originally Posted by BAN SUVS
Neither Scott nor myself is saying that road tuning is useless or pointless. But to say that you can accomplish everything you can with a dyno by roadtuning is a mistaken assumption.
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I never said that...
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Originally Posted by BAN SUVS
Dynos are superior tuning tool to road testing
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This is where the holy war begins. My claim is that they are different, and each has value. Period! Please do not attempt to put other words in my mouth.
Unless a Dyno is in a wind tunnel that is emulating the wheel speed, it is providing a skewed view of how the car will work on the road. And as we both mentioned, the road has issues with reproducibility.
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Originally Posted by BAN SUVS
...the dyno will NOT lie to you about the effect of a given change IF it's properly set up.
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Everything the Dyno tells you is in some small respect, a lie. A repeatable lie which has quite a bit of value, but none the less a lie about how the car will perform in an on road environment.
Air flow causes drag, and down force and any number of other things that affect the car in a number of ways, these are not emulated by the dyno. The Dyno contact patch is not the same as the road contact patch, thus, any rolling resistance calculations are at best, a crap shoot, etc.
Dynos are not magic! Subarus are not Magic. Road tuning is not Magic. There is physics, knowledge, experience, learning, experimenting, success, and failure. No Magic, bullet, or otherwise.
I choose to value the knowledge and experience of others, build the same within myself by learning which involves acknowledging the above, experimenting, success, and failure. If done properly, my failures will be small, and outnumbered or overwhelmed by my successes.
You choose your own path.