Cars · Electronics
OBD0 8-Bit Rev Limit Formula
8-bit rev limit and engine speed restart formula for OBD0 VTEC Honda ECUs.
Adapted from pgmfi.org wiki
For OBD0 Honda VTEC ECUs, the rev limit thresholds and recovery/restart speeds are calculated using the following 8-bit formula:
RPM = 1848000 / Decimal_Value
Where:
Decimal_Valueis the base-10 value of the byte at the rev limit address.
Credits and source
Authors Anonymous PGMFI contributor
Source Adapted from OBD08 Bit Rev on pgmfi.org wiki. Licensed under CC BY-NC-SA 1.0.