Used one of these from eBay with Carscanner free app.
IIRC you had to connect to a network not your home hub . I could get it to produce real time data graphs.
The Sport is slightly lowered suspension, wider wheels and might have stiffer shocks. Mine is poverty spec with no aircon, memory seats or cruise control. Not sure about the Ececutive but expect it has these.
Best of luck
Alan