I am sorry but this may be a stupid question to some but i have always wondered what it is.
When starting my car for the first 10-15m my car sounds like theres a lot more going on under the bonnet? Sort of like more turbo more air flow etc.
It is not a bad sound like engine rattle etc but just more powerful if you like.
After a short distance it goes away and the hilux goes back to normal.
What is happening in this stage?
I have heard other 4wds such as a mates "4wd" pathfinder (put in commas for a reason haha) which sounds like that at all times. Just wondered why mine is only at initial startup