Hello all,
My brother has recently bought an ST TDCi Mondeo and is looking at tuning.
I've seen some fantastic power plots here.
However, there is a huge lack of actual power at the wheels figures.
The one well presented car with 202bhp has actually made 141bhp at the wheels before correction.
The massively high intake temperature there is forcing a huge correction.
In this case, going from 20degC to 70degC offers about 141bhp > 201bhp in pure correction terms... and there is no way the car would have made 201bhp at the wheels had it actually been intaking ambient air.
However we look at the situation, the correction figures are hard to believe... It's hard to take anything solid from the data and make a good decision from it.
I don't believe for a minute the car isn't stonkingly quick But I do believe that the original corrections from an earlier dyno look much more in the realms of what the car is doing... the later dyno's with large intake losses seem to be distorting matters!
While looking for appropriate tuning I've had a good read here and all over for the ST TDCi Mondeo's, but really useful before/after wheels and corrected flywheel figures are hard to come by.
Do any other members here who have had remaps have wheels figures for their runs at all, especially from Dyno Dynamics rollers?
I'm trying to get a grip on what is really possible from these cars engines, because from what I have seen the tuners range from small mis information to big white lies! (Celtic Tuning for example, manage to even show you their HUGE corrections to big up their flywheel powers, while their wheel powers are fairly similar to their fellow tuners offerings)
As with all cars and tuning, a little transparrency is so important to get the best product you can...
Just from my experience, ALWAYS ask for a corrected readout of your wheels power (ie, the plot), as this is what your car is actually doing.
To find out what power you really have at the engine, a VERY good rule of thumb guide can be found here...
http://www.pumaracing.co.uk/coastdwn.htm
Try the sums with as many cars as you can and they work pretty damn well. I've had or taken over 10 turbo diesel cars to dyno's and these calculations work out almost perfectly, easily as good as dyno corrections that I have seen in my time!
So watch out out there... a Mondeo ST TDCi is making around 130bhp @ wheels standard, and 155bhp @ flywheel.
To hit 200bhp @ flywheel, you need about 170bhp at the wheels.
As you can see, the acceleration power losses go from 25bhp > 30bhp.
Thanks for reading this far. I hope I haven't come across as preaching to the converted, just I don't like to see tuners mis-informing people, or at least not giving them the information to make a GOOD choice!
There is nothing like being 100% happy you know what your car is doing, rather than always wondering if that dyno figure was a bit optimistic
Cheers
Dave
My brother has recently bought an ST TDCi Mondeo and is looking at tuning.
I've seen some fantastic power plots here.
However, there is a huge lack of actual power at the wheels figures.
The one well presented car with 202bhp has actually made 141bhp at the wheels before correction.
The massively high intake temperature there is forcing a huge correction.
In this case, going from 20degC to 70degC offers about 141bhp > 201bhp in pure correction terms... and there is no way the car would have made 201bhp at the wheels had it actually been intaking ambient air.
However we look at the situation, the correction figures are hard to believe... It's hard to take anything solid from the data and make a good decision from it.
I don't believe for a minute the car isn't stonkingly quick But I do believe that the original corrections from an earlier dyno look much more in the realms of what the car is doing... the later dyno's with large intake losses seem to be distorting matters!
While looking for appropriate tuning I've had a good read here and all over for the ST TDCi Mondeo's, but really useful before/after wheels and corrected flywheel figures are hard to come by.
Do any other members here who have had remaps have wheels figures for their runs at all, especially from Dyno Dynamics rollers?
I'm trying to get a grip on what is really possible from these cars engines, because from what I have seen the tuners range from small mis information to big white lies! (Celtic Tuning for example, manage to even show you their HUGE corrections to big up their flywheel powers, while their wheel powers are fairly similar to their fellow tuners offerings)
As with all cars and tuning, a little transparrency is so important to get the best product you can...
Just from my experience, ALWAYS ask for a corrected readout of your wheels power (ie, the plot), as this is what your car is actually doing.
To find out what power you really have at the engine, a VERY good rule of thumb guide can be found here...
http://www.pumaracing.co.uk/coastdwn.htm
Try the sums with as many cars as you can and they work pretty damn well. I've had or taken over 10 turbo diesel cars to dyno's and these calculations work out almost perfectly, easily as good as dyno corrections that I have seen in my time!
So watch out out there... a Mondeo ST TDCi is making around 130bhp @ wheels standard, and 155bhp @ flywheel.
To hit 200bhp @ flywheel, you need about 170bhp at the wheels.
As you can see, the acceleration power losses go from 25bhp > 30bhp.
Thanks for reading this far. I hope I haven't come across as preaching to the converted, just I don't like to see tuners mis-informing people, or at least not giving them the information to make a GOOD choice!
There is nothing like being 100% happy you know what your car is doing, rather than always wondering if that dyno figure was a bit optimistic
Cheers
Dave