The official figure is 1000 rpm plus or minus 100 rpm, but don't forget the rev counter may be reading either high or low ! MW
If anyone's looking to reset their idle, look here: Setting Idle Speed on Ferrari 348 2.7 Motronic. The article is located in the Parts & Service section of FC. Best regards, Rob Schermerhorn
According to the book as well as the notice on my engine lid. The idle should be 950 +-50RPM. I hope that helps....btw...mine idles smoothly @ ~1000 Ciao...Dino