You will need something to translate fuel use into a signal for the system to pick up. There's been talk of using two devices that measure flow, but those are kind of inaccurate from what I've heard I think using a TPS to measure throttle position would be more accurate, but it would also be harder because I don't think throttle position versus fuel injected is linear, so someone would have to include some programming that could guesstimate what kind of function it followed based on the TPS data and fillups, kinda like calibration with a SG.
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