My understanding is that the ICM is a fulfillment of air quality laws
requirements specifying lower idle emissions at non-standard
conditions (e.g., at low temps, high temps., varying altitudes, etc.)

But it can only attenuate the air intake, so if you don't have
everything tuned as intended by VW, since it is controlled using very
limited sensory input and non-adaptive logic, you may end up with
mixed results.  Garbage In, Garbage Out.

Have you been using the Digifant Pro Training Manual to tune the
engine? It has everything in it that you need to know.

On 2/23/17, Dan N <dn92610@gmail.com> wrote:
> yes I tried that.. without the ICV the idle is lower and smoother...
> and I don't know why...
>
> may be the ICV helps in cold weather?
>

--
It seems my TO-DO list is a FITO (faster-in-than-out)