i would be very wary of any rolling road 'tune up'

in my opinion, the only way to go with such an engine is a live map. it's very unlikely that a chip will be correct under all operating conditions, but it's very easy for the rolling road 'tune' to get it set up at idle, or on boost or somewhere in the middle, but very rare for it to be right everywhere

i can understand your reluctance due to distance etc, but in the scheme of things it could save you a lot of time and money. a bad map can use more petrol, more oil, wear the engine out faster or much worse - melt a piston, valve etc