if your race car was at your tuners, and there was an issue with it on the dyno, you needed it for the sunday for a race. would you be happy if they threw it off for joe bloggs off the street who wanted a £50 power run?

i cant see many companies doing that. why would they risk loosing someone who could be spending thousands, to help someone who just wants a power run.

the obvious thing to do would be to phone up as early as possible and reschedule the power run.