a1exander wrote:
Heard the expression "the devil is in the detail"?
I have

The detail I'm pondering now is how the ECU senses load. I'd planned to use MAP (speed-density) load sensing because it tends to be more sensitive to idle/off idle conditions but something has been troubling me and today I realized what it is.... the way it's done in this ECU (motec M150) barometric changes will affect the calculated load. That means that even if the throttle is wide open and I mean full power, if the ECU sees say 90kpa it will call it 90% load and use the mixture, ignition timing and fuel timing that goes with 90% load. It's perfectly safe but 100% throttle won't always deliver 100% power so that gets the
wrong stamp.
I need to use TPS (alpha-n) load sensing.....because it appears to be the only one on the list I believe it configured properly. I'm a little surprised at Motec missing something like this honestly. Some years ago the tech I spoke to they "highly recommend TPS load sensing" so they understand all this...but now they're manual say the opposite. I suspect the change is because MAP load sensing is WAY easier to tune....it just won't ever work quite right the best I can tell.
There are so many options in this ECU it's taking a bit of time to get them all sorted in my brain.....I should be ready to go with a decent baseline setup by May thought
