Key combination for turbo pressure visible?

Hi guys,

Just a short question; what was the key combination again for making the turbo pressure visible in dev mode?

After not working on the turbo engine for only a month; I forgot.....
(Tried a lot of combinations, but the game started doing weird)

Thanks!

 

alt + (the key beside backspace)

 

Thats it!!

You're the man, thank you!