W. Injection LED light on
 

My car is 2017 mazda miata nd with EFR turbocharger. I installed HFS-4 this week. Most setting was factory default. Only MAP sensor configuring solder link to 3.5bar, also the THRES Trimmer at 10 o'clock, Gain at 1 o'clock. Because gauge FSD ( fuel injector duty test) around 70~75%. So far, WMI work well. But when WOT, the flow bar was on and W. Injection Led also yellow light on. The water Level Led did not light on. I did not think that was active fail-safe. What reason only W. Injection yellow LED light on? Is it normal? Thanks