racingmini_mtl wrote:Yes there will be a case.
And the problem is that it is difficult to generalize because not all low Z injectors react the same. However, the p&h drivers will give more consistent results under all conditions simply because of the current sensing and the fact that you have a lower hold current. With resistors, you have to choose a resistance value that is a compromise between opening the injector under most battery voltage conditions and that keep current low and closing time reasonably short.
racingmini_mtl wrote:With an MS3/MS3X, the simplest solution for p&h drivers is to use the external box version. This is the one I have at this time: http://jbperf.com/p&h_board/v2_0.html#Buy. And you will need 2 of them since they only have 4 drivers per box.
Peter Florance wrote:Is that a straight interface to the MS3X injector output?
JAM wrote:Here is another way to do it with the earlier version of the board with the standard case and a small additional cover. i used 9 pin DB connectors, 1 for each bank and a 3 pin for each board (it was batch fire mode)
bytesandbolts wrote:Just come across this thread, have a couple questions of my in regards to running low impedance injectors with a MS3X Board.
According to the docs you are able to run the injectors using PWM from the two main injector pins from the MS3 board. However the docs also mention "Ensure your board and loom are wired for the injector flyback 12V return if using injector PWM". Would someone mind clarifying what this is for, as I'm a bit puzzled. Also not sure how the 12v return should be wired up, it appears to run from pin 6 on the DB37 from the images I have seen?
I only need to control a single injector and PWM seems like the best bet to get things running to me.
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