Evening all.

I have a 2018 Superb that I've had from new (lease).
I bought it last year and have just dug out my VCDS and had a play...
Back in the day, i used to do power runs using the logging in VAGCOM...

So I figured I have a quick play... Long story short, the runs result in me seeing 192bhp peak.

I've used a bluetooth ODBII reader and Torque Pro in the past and also seen 170+ reading from that...

Has anyone else come across anything like this?

How do you do it from within VCDS please?

Data logging... while driving. (3rd gear pull across the rev range - 4th would be ideal but speeds are a bit high.)

If you log the RPM and the engine torque you can then use excel to calculate the power and draw a plot

I used Loc. IDE00021 for Engine RPM  and Loc. IDE00100 for Engine torque.

Example attached  (the run thats got be questioning my engines power)
 

LOG-01-IDE00021_&3.xlsx

How does the ECU know the torque being developed by the engine?

 

I appreciate that it can be calculated knowing the vehicle mass, the initial and final velocities of the run, the time and/or distance covered but that would be an at the wheels torque and not take into account wind resistance, elevation etc.

 

It's implausible to me that the ECU would know what the instantaneous engine torque would be, yes the dyno figures for various throttle openings for the standard engine would be known and could be programmed in but thats very rough and ready and makes no allowance for atmospheric pressure, ambient temperature, fuel grade, engine condition and most important of all when an engine has been remapped like mine.

 

Unless I am enlightened about the ECU being able to measure engine torque in real time, for my vehicle I would stick with my old school method of the mean of opposite runs on a near level measured half mile either from standing start or rolling start then number crunching the results using the vehicle mass.

Edited 17 February, 20242 yr by J.R.

Uwe Ross says.... https://forums.ross-tech.com/index.php?threads/6252/

I dont know the method I'm afraid....

BUT if you have VCDS, try it and see if your figures show the sort of figures you'd expect (eg with a remap)

I know when I used to do the runs on the old 1.8T engines, the results were always pretty good...
(and you could see a difference in the data depending on air temp to...

 

12 hours ago, Schtum said:

Uwe Ross says.... https://forums.ross-tech.com/index.php?threads/6252/

 

"Measure it? No.

Record how much torque the ECU believes (based on its internal calculation) the engine to be making? Yes."
 

190 is lots over the 150 ps, even allowing for when you get a vehicle in the UK and you pay for the max BHP / Nm you are in the UK so never above 3,000 ft above sea level and not likely to be running at ambient temps over 40*oC so it is 150 PS Minimum not Max you get.

 

People can remap a 2.0TDI 150 ps and not get a 190 ps when dynoed.   So if the car goes really really well and you believe the scores on the doors than fantastic.