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Originally posted by ViezuAustralia
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Unfortunately I'd say that's not necessarily the case.
We've had cars putting out less or more power with our own different R&D tunes during development say, on a Golf R, and Quarter mile times can be quite different regardless of whether power is up or down over another tune on the dyno - there are a million and one other factors to consider.
Look what happened when we first launched our old Golf R Motorsport files - the very first generation was killing the quarter mile, yet we never professed to have the most top end on a dyno. (Not necessarily saying that is happening here - because there's not enough information available to comment, but food for thought)
Dyno's too are a tuning tool - and can be an indication of performance only - the drag strip will always tell us tuners more about performance of a car during development. But as Tigger73 said - he's essentially taking a holistic approach for a personal view on his tunes including some scientific (or as close to) and some personal perception, experiences and thoughts, which is far more important. Personal opinion is always subjective, but always good to know.
In addition the only way to keep it scientific on a dyno is tune the car, run it, retune the car without touching it, don't touch the bed, don't touch the straps and allow it to cool sufficiently. Conditions play a part of course, ambient temps do too, but far more important than even that is the dyno, set up, and operator - I'm yet to see a dyno Centre locally with a wind tunnel dyno - ie one that can replicate true airflow at WOT in 4th for a full run.
It will again, however, be an indication as to whether it's putting out those potentially lost KW as we hope it is for Tiggy73's sake. But there are a lot of factors meaning we can see different dyno run reports on the same car each time we strap it on. Stock, or tuned. In that regard, I'd say 0-100 and 1/4 miles are often a more important indication and far more reliable in data gathering.
In my climate up in North QLD we see temps in the low teens on the Table Lands, but also anything up to high 30's with 100% humidity this time of year so we test and do development in all manner of conditions. I find real world testing is more useful than the dyno centre.
We've had cars putting out less or more power with our own different R&D tunes during development say, on a Golf R, and Quarter mile times can be quite different regardless of whether power is up or down over another tune on the dyno - there are a million and one other factors to consider.
Look what happened when we first launched our old Golf R Motorsport files - the very first generation was killing the quarter mile, yet we never professed to have the most top end on a dyno. (Not necessarily saying that is happening here - because there's not enough information available to comment, but food for thought)
Dyno's too are a tuning tool - and can be an indication of performance only - the drag strip will always tell us tuners more about performance of a car during development. But as Tigger73 said - he's essentially taking a holistic approach for a personal view on his tunes including some scientific (or as close to) and some personal perception, experiences and thoughts, which is far more important. Personal opinion is always subjective, but always good to know.
In addition the only way to keep it scientific on a dyno is tune the car, run it, retune the car without touching it, don't touch the bed, don't touch the straps and allow it to cool sufficiently. Conditions play a part of course, ambient temps do too, but far more important than even that is the dyno, set up, and operator - I'm yet to see a dyno Centre locally with a wind tunnel dyno - ie one that can replicate true airflow at WOT in 4th for a full run.
It will again, however, be an indication as to whether it's putting out those potentially lost KW as we hope it is for Tiggy73's sake. But there are a lot of factors meaning we can see different dyno run reports on the same car each time we strap it on. Stock, or tuned. In that regard, I'd say 0-100 and 1/4 miles are often a more important indication and far more reliable in data gathering.
In my climate up in North QLD we see temps in the low teens on the Table Lands, but also anything up to high 30's with 100% humidity this time of year so we test and do development in all manner of conditions. I find real world testing is more useful than the dyno centre.
Put it simply; he must know now which tune is better and faster. Hell, for sure you'd know if you drive Tiguan 118TSI or 132TSI.
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