i am only wrong if you want to split hairs on what degree of reducing speed it has
you wouldn't lift your foot off the gas to slow a car down even slightly in an auto just to coast ( right ?)
but in a manual no matter what gearyou are in, it will slow the car much more
correct?
amf
that is why you don't refer to it as engine braking in an auto
and flipspeed if you want to manually change the gear selection you can the biggest toll on the car are the engine mounts
( mainly the dog bone)
when selecting the gear the tranny uses maximum pressure on the clutches for limited slippage
use the ect button if you want better shifting points for faster acceleration
hope this helps clarify