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Bad things: I am going to have to provide separate ground circuits for 5 separate pins on the ECU back to the battery 3 are 10 gauge to try and prevent noise contamination.
Hello,
I'm an Electrical Engineer and I would suspect that the larger gauge wire will help with voltage drop, but not during cranking or noise issues.
Can you get some EE support from FAST? I would think the noise source would be from the ignition system and maybe different routing of it's power connection may help or adding some capacitance to the input power pins to the FAST ECU which can help with noise and brownouts.
I find it curious that the system jumps into flash mode.
I can see a low voltage causing a brownout and the controller to reset but not go into upgrade mode. Can you try another FAST controller, maybe this one has an issue with it?
Best,
SB
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