Thanks Tabetha!

No I don't have the ECU and I am collecting info to help me decide which one to buy but the emerald has addaptive mapping and you can select different maps that is why I 'm thinking for the emerald. Before I was thinking about DTA S80. Pros and cons between Emerald and Dta ecu?
Basicaly what I need from the Ecu is to drive the low delivery injectors sequential and then when demanded to switch from low to high and run them also sequential for better fuel economy. If 4 coil are going to be used then they must be sequential or else wasted spark (or can it be possible to have 4 coils and use them as pairs like wasted spark - I like all the spark energy from the coil to be delivered to the spark plug and not devided to two plugs). Thanks for any info!