The marine application I've been thinking about is using TBI PCM 16197427, which is 2000 PPM. The DD does support 2000 PPM. The TBI PCM does not need a VSS to be very accurate. The TBI PCM has near idle / off idle transition at about 3 MPH. I was thinking that the "plane" transition would be good place to switch from near idle / off idle fuel and spark tables.
dave w
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