The Economy / Sport switch acts on the bowden cable. If your car is actually has the system you'll know, there is a box with a vacuum line going to it (on the passenger side of the transmission).

Some later US cars used a similar setup to delay shifts until the cat is warmed up.

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.