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LS1FREEK
November 30th, 2019, 04:33 AM
Anyone have the MAP Sensor Scaler/Offset settings for the Holley 554-107 3 Bar MAP?
ChipsByAl
December 1st, 2019, 08:12 AM
That looks like the old design MAP sensor from the 80's or 90's. Not sure of the scaling on one compared to the new design sensors. If you can't get it worked out with manual testing Holley does offer an adapter.

HOLLEY EFI LS MAIN HARNESS TO LS3-STYLE MAP SENSOR ADAPTER
Adapter Harness
PART# 558-416