W212 E63, adjustable/toggleable valves?
Just curious with this one, my previous thread managed to ascertain that the idle does increase in Sport and Sport+ which is something I'm interested and excited in
Next, with the standard (and if there was an optional sports exhaust) was there an ability, button, function etc to open or toggle valves? Not found much in the way of the exhaust *having* valves, so I'm unsure on this one!
Am also looking at a W213, which I do know has the valve button, but just wanted to check for the W212 since they're a good £15k cheaper for low mileage, post-FL examples!
Thanks everyone



