Quote Originally Posted by Gary L View Post
... after a bit of research, it appears my ITB car (a '71) would certainly have had one of these devices when new. FWIW, I don't have a clue where it is today. But if I found one and put it back on, I would NOT be going slower as a result.
But you might, actually, if your car had it mounted on say, the radiator header right next to a stock hole that you currently use to route copious amounts of cold fresh air to your engine. And now the big container blocks that hole, removing your source of air.

Now, the rules don't say you can remove it, nor do they allow it to be moved.