I use Siemens Deka 60 lb/hr (630cc /min) injectors. Even with a 30 degree spray pattern they failed emissions in a standard manifold.
LH2.4 soon learned their characteristics but at full throttle/max boost it would bog rich at about 4500 rpm. Apart from that they work very nicely.
I ended up putting the injectors in a K-jet head (spraying directly at the valve.) & using a 3.5" pipe with MAF innards which sorted the above problems out.
I think different ECU's can react slightly differently & then the chips will alter things too
You definitely need AFR & boost gauges to know what's going on & not damage your engine one way or another.
I seem to remember reading that the green giants matched the 012 MAF very well, but have no personal experience. The only other thing is to make sure that they are genuine Bosch & not a knock off- study the wording of the ads very carefully.
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