All 3 liter roadsters had a throttle cable. Nevertheless, with my S2 the rev hang was extremely pronounced and so bad and long lasting that I had zero engine brake after downshifting downhill before corners. Driving was absolutely no fun. Even though the throttle was closed immediately by the cable, the rev hang occurred with the help of the idle air valve controlled by the ECU. As I wrote above, otherwise it was a great car and with the new ECU even more so.
Only the new ECU had transformed the car into a very fantastic driveable one.
John Harris has absolutely hit the spot. It is exactly these reasons why there was a rev hang. Historically, it was the first intervention in automotive development that put other interests above pilot control. I have great sympathy for the reasons for this intervention, but from a driving perspective it was frustrating...as long as you didn't just roll along unsportingly with the car and in these cases, rev hang was sometimes not even noticed.
