Hi, I fitted 100% Jetex nozzles to my injectors. How to calculate durations? I‘ve been told to cut duration by about 30% and Adjust SOI to end up at the same EOI. Wich I did but the engine would start up rough and still give me lots of smoke above 2000rpm. It also would idle very badly. Thinking about it, this can‘t be as simple as just cutting duration by x% because on the PD engine the injection pressure depends on the rpms. Is there a way, a guide to adjust duration and SOI? It just has a little tune on it the rest of the car is still stock, I want to get it as close as possible to be running identically to before the swap. And changing other variables(Turbo) In the system afterwards. Maybe somebody has a good file for 50% or 80% nozzles, this sure would be of help.