A tuning box will never be as good as a proper remap.
A proper remap will not only increase the power and torque of the vehicle, it will improve the MPG. I have seen VW caravelles increase from 28 to 35 mpg for town driving and on average it gives you anything from 5-15% savings.
If you drive 60k a year at an average of 40mpg you will use 1500 gallons or 6825 litres.
At (i'm being generous) £1.35 per litre that will cost you £9213.75 per year in fuel.
Retuned - at say, 45mpg (roughly 10% increase) your fuel consumption would be 1333 gallons (or 6065 litres).
6065 litres @ £1.35 = £8187.75
Savings = £1026 per year.
Cost of average proper professional Checkatrade.com approved tune is from £275
We at 1st taxi Solutions are able to offer this service through a sister company TH Performance (
http://www.thperformance.co.uk).
Please get in contact if you require any more information, we are happy to talk to you about tuning and all your other taxi needs.
Regards
Terry
http://www.1sttaxisolutions.co.uk