Power fc capabilities?

[Shiftkickslide]

Upgrading my 1300cc id injectors, any info if the power fc can control the 1600's? I've heard mixed reviews so though I'd try and find someone on here with a similar setup OR someone that knows for sure

[Croustibat]

injectors have basically 3 caracteristics : high/low resisting, fuel flow and latency.
The first thing is purely electrical, so your ECU software has not much to do with it (however, high latency injectors usually require larger current draw, which the driver may have trouble feeding) the fuel flow is not set directly, it is set with the K value ( MAF changing does the same, in the opposite direction, once the VE/VQ map is changed accordingly). Finally the latency is actually a set value. As long as your injector flow is made with an adequately sized MAF, your K value will not change much from its original value, thus the ECU will not even "see" it.

Frankly an OEM ECU (with a nistune) has no problem managing 2000cc injectors that are based on new tech (like EV14 bosch based injectors). If you have some like that, you won't have a problem. They are high impedance so you need to ditch the dropping resistor.

If your injectors are old tech - usually based on lucas, sard or delphi injectors - the power transistors might have some trouble. A usable workaround for this is to use 2 dropping resistors wired in parallel, it will halve their impedance and will allow more juice to the injectors. It IS a workaround, more current also means more heat, so don't do it unless required.

Bottom line : use ev-14 based injectors, it will save you tons of trouble. Injector dynamics are based on them so it should not be a problem. Their latency is also very low considering their size, they have something similar to old tech 550cc and atomize better too (around 800-900µs )