930 fuel enrichment questions

[fredmeister]

I have some questions on fuel enrichment for a 930 turbo with stock CIS:
Item 1 refers to the Imagine Auto fuel head modification:
1) What exactly does the CIS fuel head modification do for the CIS system, I understand it provides more flow capability, but how does it compensate for lean running under boost if the air flow plate controls the injection quantity/lift of the injection plunger?
2) What else must be done to the system, for example the warm up regulator to make this all work together properly? As I understand this will replace the need for the Andial fuel enrichment device?
3) Is this a drop in change or do I need to take the car to a tuner with an A/F ratio meter to get the system dialed in?

Any answers would be great.
Does anyone currently have this on their 930 and what was your experience in tuning it and how does it perform?

[gumba]

You'll have better luck posting your turbo questions on the Rennlist Turbo board. All this stuff has been covered pretty well.

[fredmeister]

Thanks