JKS17 wrote: ↑
Mon Aug 10, 2020 11:36 pm
So looking at the code seems that this need to be grounded when engine is running so code knows to start heating.
i think this replaces need to power controller from FP relay, just configure one of the speeduino outputs to pull "IN" to ground
when RPM > x
Actually, you don't have to power it from the FP relay, only jump the FP signal from that output pin to the controller input. Think of it as an "enable" input. This would seem simplest, although not only the FP and VVT outputs could be used to signal running, but also other outputs such as Boost and Nitrous. Just set with parameters that enable only when running for output, e.g., set the Boost Control for Open Loop and 100% duty cycle in all cells, with the table columns starting at perhaps 400 rpm and ending well above redline. Bingo, output active anytime rpm is above 400 at any MAP.
JKS17 wrote: ↑
Wed Aug 12, 2020 12:51 am
So FP pin in Speeduino is really only option, maybe just turn fuel pump priming off so controller dont try to start heating.
Several other options until generic outputs arrive, but the FP only runs a few seconds for prime (I use 2s on my stuff), so no problem for heating. Just route a second line from the FP pin to the controller IN pin, and power the controller with switched and fused 12V. It won't heat until the engine is cranking, and won't get hot enough cranking to be a problem before the engine starts, even with a slow start or multiple attempts. Your call, and another "running" output is always an option, and the output can be reassigned
in TunerStudio to a ULN or HC output if preferred.