I agree that the goals for each project's engine will be different, requiring different injector needs. I hope it did not sound like I was implying that my solution was best for everyone. Those 440cc EV1 injectors should be perfect for yours. It allows a little extra capacity if needed yet still allows the ECU to function at a good duty cycle. If I do it all again (maybe for another turbo engine some day), I will likely go that direction. Combined with proper turbo pistons it will allow for more boost and higher performance levels (compared to my current conservative project). About the injector calculator I linked. I also agree that 80% duty cycle is what I've seen elsewhere. The higher % in the linked calculator was stated as the maximum, but it defaults to that so it's misleading. However there is the option to change the percent and I also used 80% for my calculations. I really like your new setup, nice job. It seems much improved from the earlier version and I think will work better for you. I also like the way you assembled it to the stock fuel rail, looks professional like it came that way. Lately I've been focusing on rebuilding my engines (I'm doing three at the same time). So my turbo system hasn't progressed in a while.