So that means that piggyback is needed.
I think, that if MAF notice more air, due to longer opening and higher lift of valve when cams are activated, ecu will add more fuel. And when are deactived, ecu will decrease fuel due to shorter opening and lower lift of valve than stock DE cams based on signal from O2 sensor and MAF. Will this work? Maybe a could synchronize the point when open loop is activate with cams activate, to supply enough fuel.
A have rpm limiter at aprox. 6900 with DE ecu. I know, I will miss the top power, but I need to miss the high torque due to a transmission (no more over 200 Nm). The power of stock VE could be enough for me in comparision to DE. Maybe more HP, but no more Nm.