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cheap fuel flow sensor
An internal of the sensor in question ,you can see two 3mm magnets in the paddle crossbar ,normally it comes with one ,i have added the second for better sensitivity, I did at one stage spot mill the the top cover and fit 4 hall effect devices (one magnet fitted) to give more sensitivity , the four outputs were joined together & fed into an mpguino with some success, although low speed was an issue due to sticktion(is that a word?),I did have the engine idle at 15;1 AFR ,cruise ratio 15:5 (2.2 litre 4y toyota),with a larger engine like your Crown you may get better results withe an overall higher fuel demand.
I will have a dig for my notes & post anything else that may be useful.
Tp
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