We all know (well, most of us do) that revving a cold engine is the best way to wear it out quickly. An modern fuel injected engine will zing up to around 2000rpm at startup and then takes a little while to go down to what (I think) is an acceptable level. I hate that, but there's nothing I can do about it!
Question 1: Why do manufacturers program the efi to do this?
Question 2: What is a realistic maximum rpm to use on a cold engine
Question 3: How long should the revs be kept down (or what water temp /
oil temp)?
Cheers,
Glen