====== Secondary Injectors ======
===== Basics =====

The following diagram provides a high-level view of how to wire in a second bank of injectors for use with ECMLink's secondary fuel control feature.  This diagram illustrates 4 primary injectors and 4 secondary injectors.  But, really, there's no reason you couldn't run 4 and 6 or whatever else.  You just have to calculate the primary and secondary global fuel adjustments accordingly.

{{https://www.ecmtuning.com/wiki/_media/injdualbank-relay.png}}

===== Driver Box =====

The "driver box" in this example would be any standard peak/hold injector driver box.  Typical examples include the AEM driver box, but there are several others as well in varying price ranges.  There is one that's used by the mega-squirt guys pretty regularly that's fairly inexpensive, especially if you're willing (and able!) to do your own quality solder work.

===== Resistor Pack =====

You'll notice that the stock injector resistor pack is missing from the diagram.  That's on purpose.  You don't use it.  The peak/hold drivers provided by the driver box simply don't need the inline resistors.