ESP / Traction Control Fully Off for Dyno
 

Please can some tell me the definitive answer as to how I can turn off the traction control fully for the purposes of dyno testing on a rolling road?

I have searched and read many threads and haven't found anything definite. I thought I'd found it with "remove fuse 17 & 18" then someone said even that doesn't "fully disable" it.

I had a dyno today and the only reason for the low figure I can think is that the ESP wasn't fully off, certainly no fuses were removed. Here's hoping someone knows the answer!

Re: ESP / Traction Control Fully Off for Dyno
 

I'll admit I DO NOT know much about "dyno" testing/running. But I must ask what are you doing? What is a Dyno D?? (You mentioned it in another post) I ask because the dyno testing I'm familiar with is done on a stationary platform, yet you are doing this on a rolling road. If you are using some kind of computer hookup to the OBD II port under the dash, then you are using a computer simulation and the results will vary with the program. Basically, a guess as to what is really happening. It might be a good guess, but none the less it is still only a guess. It is similar to the climate change, atmosphere warming thing; everybody gets a different answer and comes to different conclusions.

Re: ESP / Traction Control Fully Off for Dyno
 

Re: ESP / Traction Control Fully Off for Dyno
 

Yes sorry, Dyno D is "Dyno Dynamics" the manufacturer of the equipment, and a rolling road is a stationary platform - maybe you call them something different in the US?

After a lot of reading I'm convinced the traction wasn't off, can't believe my car - that he said was all fueling good and running fine - would only make 199.8HP at the flywheel when stock should be 215. It has exhaust, filters & map done and is definitely quicker than my girlfriend's stock XF the same.

Re: ESP / Traction Control Fully Off for Dyno
 

The 215 is in the lab, ideal conditions and without the drag of an alternator. His figure is just a guess using an estimated loss for drive chain losses.
Look on the bright side, you can catch your girlfriend.;)

Re: ESP / Traction Control Fully Off for Dyno
 

I think it's a bit more than a guess, from what I've read the Dyno D system uses the run down and other things to get the flywheel figure, and recognised as being reasonably accurate. I've had quite a few different cars done over the years on Dyno Ds and they generally make what you would expect, and never had one read under manufacturer's quoted figure, which is why I was so surprised with this being so much short - one or two out, but not fifteen.

Re: ESP / Traction Control Fully Off for Dyno
 

dynos are close but never will be 100%. I think a dyno would be good for comparisons when modding. to see if you see any gains, but I wouldn't put much into the reading other than that. If it performs well for you, then that is all that matters. I see numbers thrown out there all the time. They are all over the board with similar modifications. But few are the same...