As far as accuracy? I've heard Mustang Dyno's read a bit on the low side. My car has only been on a Dynapack Dyno, where you unbolt the rear wheels and bolt the hubs to the dyno drums. As opposed to being sitting on rollers. I imagine the weight of the wheels effects hp somewhat, but it can't be a large difference. If anyone has personal experiance with having their car dyno'd on two differnt kinds of dyno's, prefferably the two I mentioned, any feedback is appreciated.
My reason for asking is my Z was just dyno'd @ 396hp/392tq to the wheels on a Dynapack Dyno. My only mods being Halltech Stinger Intake, American Racing Headers, Catted X Pipe, Corsa Indy Cat Back, & Dyno Tuned. Somone said this style of Dyno is not the most accurate, and if I ran it on a Dynojet it would show the "real" info.
Either way, i'm more than happy with the way my car runs and performs.
These two are more comparable than the Inertia vs loaded dyno deal. You should be more concerned with before and after, to see your results, as measured on the same dyno. Both good choices.
The issue is not of accuracy by design, but the fact that the inertia dynos do not account for actual weight or aerodynamics, and is why the output numbers are higher on them, versus these other two loaded dynos, which output the true power numbers after the weight and aerodynamic losses have been accounted for.
Ignorance and the willingness to shared one's "perceived" knowledge is rampant in this day and age, and you really need to process out most of what you hear, and make sure you understand the concepts behind each theory or argument, and prove the facts for yourself. I would suggest that your tuner may be more informed than most, because they are using what I would consider a more "real world" type of dyno.
These two are more comparable than the Inertia vs loaded dyno deal. You should be more concerned with before and after, to see your results, as measured on the same dyno. Both good choices.
The issue is not of accuracy by design, but the fact that the inertia dynos do not account for actual weight or aerodynamics, and is why the output numbers are higher on them, versus these other two loaded dynos, which output the true power numbers after the weight and aerodynamic losses have been accounted for.
Ignorance and the willingness to shared one's "perceived" knowledge is rampant in this day and age, and you really need to process out most of what you hear, and make sure you understand the concepts behind each theory or argument, and prove the facts for yourself. I would suggest that your tuner may be more informed than most, because they are using what I would consider a more "real world" type of dyno.
Hex,
Thanks for your input. I see what you mean about "gains" being more important as long as they're measured on the same dyno.
From the last time my car was dyno'd on the same dyno, I gained 20hp/17tq after the headers. Which I think is pretty good.
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Difference Between DynoJet & Dynopack Dyno's???
