Thanks - that sounds interesting. So in closed loop the system works almost as stock (with possibly the same fuel pressure) and nonetheless you can control your afr at wot at high rpms.
Can you buy this system from needswings with a manual how to install and how to "programm"?
If - with the crossovers - the boost level don't exceeds 15 psi with a 65mm pulley, you probably don't need a tune (for savety-reasons). You just set your entry boost-level (perhaps 9 or 12 psi) at your fpr - and watch if afr is fine.