dyno run!!

[George Smooth]

Part of the percentage by default on the dyno at set conditions will vary from dyno to dyno as Hyperpower uses it for calibration purposes. I.e on one dyno if the temp is set at a default x temp y barometric pressure and z humidity it will result in the correction factor of 19% and the next dyno down the street 28%. I think KAR's new default sits at 29%. It use to be 24%. It doesn't really mean it's added power onto the true power. Whatever weather conditions where changed added a percentage point. Probably higher temp and humidity.
The petrol normal aspirated, turbo etc does not change the outcome of the run. Not even sure why they have that but it's been in the software since day 1 in 1997.

 

[Rolf]

Default correction factors are normally NOT shown on a graph.... why should they? They are part of the calibration and therefore not of interest to the client.

As many people correctly stated, it's only worth if you are able to compare two of the same kind or before and after.

Impressive standard figures like the ones of the OP's car are -in my view- fantasy figures and worth nothing as long as they can not be compared with some reference.

We have had several examples in this forum....

Now I put my flame suit on, sit back, relax and wait for things to come :=):

 

[dvst8]

Any dyno result means nothing if you have nothing to reference it back to. Different car, different conditions is a different result.

However for comparative reasons KAR results are the general unspoken standards for jhb. And in no way is KAR a fantasy dyno.

Dyno results are like competing in the special olympics. Track times and how it performs on the street as well as reliabilty is where the real results come from.

 

[George Smooth]

Default correction factors are normally NOT shown on a graph.... why should they? They are part of the calibration and therefore not of interest to the client.

As many people correctly stated, it's only worth if you are able to compare two of the same kind or before and after.

Impressive standard figures like the ones of the OP's car are -in my view- fantasy figures and worth nothing as long as they can not be compared with some reference.

We have had several examples in this forum....

Now I put my flame suit on, sit back, relax and wait for things to come :=):

This is the way the dyno manufacturer has decided to keep his software for the dynos. Hence I said email them. You can take the same car to 3 different dynos in Gauteng and you will get the same result on the same day on the default which will vary on all of the due to different calibrations for roller weights etc.

 

[Rolf]

Have done that and got different results on same car..... thats the reason WHY I am so critical :idea:

 

[George Smooth]

Have done that and got different results on same car..... thats the reason WHY I am so critical :idea:

There will be a variance from dyno to dyno but guys up here know which couple of dynos are on par with each other for comparison purposes. In the past I have expiremented with different tyre pressures, different car temperatures including engine oil, gearbox oil and running gear and the results can vary by quite a bit.
I personally am not a big fan of the dyno as road conditions are completely different to the dyno. Now and then I will run my cars just to get a power figure or by a slight chance pick up something on the curve that my logging does not show.

 

[Rolf]

Only way George :thumbs:

 

[dvst8]

Have done that and got different results on same car..... thats the reason WHY I am so critical :idea:

There will be a variance from dyno to dyno but guys up here know which couple of dynos are on par with each other for comparison purposes. In the past I have expiremented with different tyre pressures, different car temperatures including engine oil, gearbox oil and running gear and the results can vary by quite a bit.
I personally am not a big fan of the dyno as road conditions are completely different to the dyno. Now and then I will run my cars just to get a power figure or by a slight chance pick up something on the curve that my logging does not show.

And the you have the track results too.

:bravo:

Dyno should be a tool for tuning and assist in fault finding. Not be used as means to compare results of different cars ran on a different day under different condition.

Well thats my 2 cents but may be worth less.

:thumbs:

 

[Rolf]

... no, your 2 cents are absolutely worth a lot and I hope that people who posted their praises do appreciate your 2 cents too

 

[dajee]

I know this is an old thread but last night. I went for the dyno night at ALB and got a bit of a better dyno run with the correction set at 18% for diesel

Here's the graph


Still stock btw
Software coming soon:fencelook:

 

[Executer]

200NM lower...shows how a correction factor can give these fantasy numbers. Doesnt matter really, just make sure you take your car to the same dyno/s after the software to guage the gains.

And if going to a dyno with fixed corrections (which most in JHB are), try take it under the same conditions (Temp, Time of day etc)

 

[sash]

2.9 secs on the first run and 4.9 sec on the 3rd run?

Did they dyno in 2nd or 3rd cos i see the speed is 76km/h

When i dyno'd mine in fourth before s/w it took 11 secs to get to 176km/h, after software it took 6.5 sec to get to 176km/h

 

[Blert]

I was there last night aswell

his run was very quick both of them last I seen was 125kw and the run was over.

BTW dajee your car is sexy brother

 

[dajee]

Thanks man :thumbs:
Did I meet you?:fencelook:

I was also wondering why the runs were so short but had to leave so couldn't speak to the guy who did the run

 

[Blert]

lol yes I was the short guy between the three when you pulled up and asked is this ALB

as for your runs I don't think they could find a gear to dyno your car. either the gear was to long or to short. best call and find out hay

 

[phantom]

200NM lower...shows how a correction factor can give these fantasy numbers. Doesnt matter really, just make sure you take your car to the same dyno/s after the software to guage the gains.

And if going to a dyno with fixed corrections (which most in JHB are), try take it under the same conditions (Temp, Time of day etc)

For me the worst is that if you compare these two graphs it's not even the same car. It's always been important to me to see where the power band is because it's no good having it where it means nothing when doing power runs. On the one graph power has already dipped at 4000 and on the other peaking at 4000. Although figures are lower on second graph, it's a better curve. Correction factor of 25/26 percent are more realistic numbers up here at altitude.
I had a 2012 330dLCI and they are strong. This was maybe why i was disappointed with the stock F30 330d, that is rated 190kw 560nm, as it ran kneck and kneck with the older E90 330dLCI.
Maybe the manufacturers even mess around with figures from time to time?
:idea:

 

[Oldman]

My 330D at the Opel OPC dyno dar at Car today, nor you guys used horse power obviously run in 3rd gear stick to the same dyno for comparison !

I have dynoed many cars over the years and they all differ from Dyno to dyno

241,74 Horsepower at the Wheels in the conversion sounds optimist for a 190 Kw car.

Most Dynos run the correction factor to set the standard to Detroit in the USA to arrive at standard for measuring horsepower throughout the world. Most Dynos in Joburg run at 17%, the uncorrected figure is when a tuner tells you that your car is not making power. They 'tune' your car and set the correction factor to 17% and you see great power gains, or they spray water on your Intercooler.

I have taken this a benchmark. So get your cars to Kar...


Sent from my iPad using Tapatalk

 

[ChrisBrand]

It says petrol normally aspirated?? And ambient correction of 30%?? Thats a tad high...

Sent from my GT-I9500 using Tapatalk