...I'm calling Holley tomorrow to get my head straight in something. I'll post about that tomorrow.
So as a part of the initial setup wizard, you're asked to input the desired idle speed. For whatever reason, I picked something like 725. Well it never would idle down that low, kept hovering around 800-850. After some reading last night and a quick call for follow-up to Holley, here's why...
In the controller, there's a setting that sets minimum idle for a given coolant temperature. If yours is set at 800rpm at 160 degrees, you'll never get 725, so you have to adjust (more on that later). Additionally, if you have a configuration load where the minimum idle for -40 degrees is set to this odd value of about 425, once it warms past -40 degrees, it will idle around 800-850 at any temperature regardless of anything else that's set, it throws the idle air control (IAC) into a tizzy. This scenario is rare with the current shipping units, but can appear after doing a reset on the system. If you see it, you just need to drag that plot point up. Also, if you want something lower you need to set your graph lower than your chosen speed at any temperature over 140.
in this photo below you see where -40 degrees is set at about 425 rpm, once coolant is warmer around -35, it will idle at 800-850 from there on out. Basically it doesn't like you to increase idle RPM as coolant heats, only lower it.
Here below, the -40 has been raised to around 900-1000 at -40, then it drops as temps increase and levels off around 780 at 140 deg. Still, you can't specify an RPM lower than this without moving the plot points.
My engine seems happiest at 675, so I need to drag my points down below that so that the idle target can be reached. So theoretically I could set all points at 400 rpm at temps 140 and above, then set my idle point at 675 and it would idle at 675. You can fine-tune idle speed at the throttle body just as you would a carb if you wish.
Again, all of this is done with the kit's handheld display and stylus. You CAN export your config to the included SD card and load it in the free Sniper Software on your laptop and make additional changes or fine-tune plot points then reload your system with those changes when you put the SD card back in the display unit.
This sounds like a lot of knowledge is needed - IT'S NOT. it's just learning what few tweaks you need from the outset, after that the system is entirely self-learning OR computer manageable by you IF you choose.
I will test and advise my changes tonight.
K'n STANDING!
