Vanos question

[///M3-E36]

i have noticed that my vanos kicks in around 5200 rpms, is this the point where it kicks in for you. i once read it was supposed to kick in around 4500 and i just wanted to see what you guys have experienced, this is on my 325i btw

[Konstruktion]

Aren't all tachometers naturally off balance a bit? Atleast they are on all 5 spds I have driven.

[scottycs]

I doubt your vanos kicks in that high. If I remember correctly its somewhere around 3-4k RPM, bc on the dyno there would be a small section of low hp right before the vanos kicked in.

[///M3-E36]

thats the main reason i am asking, the technition as the dealership told me around 4000-4500 but on mine that low Hp section is usually between 4500 and 5000, do you think something could be wrong with it?

[scottycs]

I dunno? How do you know vanos is kicking in then?

[///M3-E36]

from what i had heard about a vanos is that it is a lot like a Vtec on a honda, and on my friends honda, when it kicks in the engine sound different and you get a boost of power, and what i also heard was that right before the vanos kicks in there is a low hp like you said, so i am assuming that this si the point that it is kicking in

[scottycs]

From my 325is and M3's I have driven it seemed to be around 3500 RPM or around there. I doubt you have anything to worry about.