VAG-COM giving 215hp!? on 2.0 TDI

[stuartsjg]

Hi,

Had a spirited run home from work and had VAG-COM running in the back seat.

1st section is about 500yds of dual-carridgeway so i got a good idle to near max 3rd gear run, had to slow down due to speed limit (sorry, stop rolling ur eyes) and a roundabout.

Have put the rpm and torque data into excel, calculated for kW then converted to HP. Have links below to the plots as PDF and the data.

The peak power is showing as 215.4HP at 4066rpm and 337NM torque...

That cannot suerly be right for an 08 2.0 TDI FR 170 with 5k miles!?

http://www.sigen.plus.com/data.xls < Excel Data

http://www.sigen.plus.com/hp-output.pdf HP output plot

http://www.sigen.plus.com/torque-rpm.pdf Torque and RPM data

Its not been modified (as far as im aware) so im thinking there must be some measurement error or delay between the RPM and torque which gives a false reading....

I did add some millers in the correct concentration to the Asda fuel, that cant do it?... can it!?

Any ideas?

Stuart

 

[Al]

Not likely. The information you get and the way you are calculating it is more likely to give a rough estimate rather than an exact figure. Having said that most 170PD's are putting out just shy of 200bhp on the rollers with no mods, but that is obviously a bit less than you are getting from your logs and maths.

 

[stuartsjg]

Hi,

Will do some runs over time and see, i suppose various factor may affect it.

Ill also try using the VAG-COM turbo mode to see if high speed will log more accuralty...
Im thinking that if there is a delay between the rpm and torque data, mening they are not logged at the same time.

for example log time may be every 1 second and at the start of the second 337Nm is logged but at the end of the seccond 4066RPM are logged. However in that time, the torque should have fallen. So, in this example, the torque is too high for the RPM so giving me a higher than real power figure.

High speed logging or a sustained run should show it more accuratly.

Is it common with cars to show on a dyno to show so much over?

I would have thought they would be, say 110% of rated when new (after run in) so that at perhaps 5 years its worn down to 100% then will fall after that.

I know with solar electric panels they are made like that as the standrds show they must operate at rated power once 10 years old and only drop by 5% at 20 years old so they over make then by 15% when new to compensate for time.

 

[sorin83]

Sorry for reviving the topic.
Mine made 392 NM on VAG COM and 394 NM when mesured on VAS at the dealer. Car is running on standard map.
From my understanding the mesurement of stock cars should be quite precise but i onestly doubt it.
I also mesured a friend's 2.0 TDI 140 HP Octavia and got ~355 NM of torque.