Dyno Dynamics Shootout Mode – Fact Or Fiction.

[ktford]

But hypnoidoc,

can't you send 'em into as trance to tell you the truth about their dyno, like Jim Carey in Lier Lier.

Scotty

[Cobra]

5 seconds against the limiter with no proper air flow !!!!!!!!

that's my limit ... the engine will cook itself without the 200kph head wind :lol: :lol:

I use dynos for before and after ... even like the g-techs and the like (as long as you know the weight of your car - I've got load cells )

as long as you don't read them like you would a bank balance ...

[teebone]

Whilst you guys are talking the technical stuff, how much does a couple of tests typically cost and notwithstanding the valuable comments being made, are there some Workshops with a Dyno that you would be more likely to recommend (Melbourne)

[ktford]

typically $30 plus for a single power run. of course depending on who's in charge

Scotty

[hypnodoc]

Hi KTford.

I tried that, just seems to make them more dull than they are or it scrambles their minds so they can't set up the dyno properly. I need to hypnotise myself to get over all the stress this bloody car has caused. I lived in Brissy for 10 years, at least chiptorque and Motsons know what they are doing. Bought an EB Xr6 from Southsides, your right, they are good

[cuspub]

teebone, if from melbourne try Autotechnique in Rowville. 9763 1195

[Guest]

Had my car dynoed on a dyno dynamics and someone messed with it,got 3 different readings,185,180,and the supposed real one178.

When I asked why the eastern states have got higher readings we put it down to optimax,conclusion; stick your dynos and drive out to the drag strip,the lights drop,the bullsh!t stops.

vik

[ktford]

yeh, what he said!

Scotty

[aps]

Brian,

Your comments are reasonable, though there are other facts to consider.

We have tested a stock XR6T Falcon on four different Dyno Dynamics Dynamometers on the same day, with the tyre pressures set to a known value and tied down correctly on the dyno. Tested the vehicle in SHOOT 6 Mode (which is the correct mode for 6 cyl engines), the power variance between the lowest and the highest power figure was 2 kW – from 181 to 183 kW. This proves beyond doubt to me that the dynamometer and software is extremely accurate and consistent. The variable in most cases is the dyno operator, tyre pressures, method of vehicle restraint and cooling fans.

As for the APS dynamometer, it is calibrated monthly and is both accurate and consistent. I think many XR6T owners become confused because identical model cars should have similar power. The truth is we have seen and measured a variance of up to 18 kW between the highest and lowest power levels on a stock XR6T Falcon – 175 kW being the lowest to 193 kW highest and you can certainly feel the difference on the road.

The data that appears at the bottom of a Shootout power graph displays the environmental and Dyno Dynamics preset values recorded at the time of the power run. They are by no means identical unless of course all environmental conditions happened to be identical – which may or may not be the case. If you would like a thorough explanation of the data printed on the Shootout power graph, contact Dyno Dynamics as they are the manufacturer of the dynamometer and software, therefore they are best qualified to answer your questions. It is not prudent to be critical of a system if you do not have total technical understanding of the software. This is the software and dynamometer utilized at all major dynamometer competitions including Summer Nats. Whilst Dyno Dynamics has been manufacturing dynamometers for 20 years and are the industry leaders in their field through innovative engineering, it is no surprise that they are a big target for young dyno companies attempting to achieve market share.

I find it amusing that the person who started this thread happens to be a representative of a dynamometer manufacturer who is in opposition to Dyno Dynamics. It would be more professional if the author would be upfront and state who he is and whom he represents when making comments about a product or company on a public forum. I could say more though this is not the right forum to do so.

Chassis and engine dynamometers are excellent tuning tools in the right hands and I assure you that we do all in our power to measure and record actual power levels of the car in question. Whilst this may be good marketing as you say, it is also the truth – and there’s nothing more powerful.

Regardless of dynamometer brand, we should all remember it is a measuring tool. When engine enhancements are performed, it is vital to compare before and after dynamometer tests to verify the performance gain or loss across the entire power curve. Bottom line is that you need to be dealing with a reputable and honest operation, not Freddy from Ripsville. Like every industry, dyno operators range from the ordinary to the excellent. The challenge is to investigate and find a good operator in your local area.

I hope this helps.

[Turbo6man]

aps> good observation and very good comments.

It was pretty clear to me where the origin of the thread lay - I think most people saw it for what it was, and therefore simply with-held comments ...