OMEM710 Hardware Manual 2v11
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6.1 Engine Speed
All maps (fuel, ignition etc) use the same rpm axis. You can adjust this axis on any of the maps and
it will affect all of them. Typically the RPM axis would have a value towards stall as the first site
(450rpm), a site just below the target idle speed, a site on the target idle speed, a site just above the
target idle speed, then the rest of the sites evenly spaced to complete the engine speed range, the
final site being just above the rev limit. On some engines it may be useful to increase the density of
sites around areas where the fuel and ignition requirements change rapidly e.g. where an engine
‘comes onto cam’.
6.2 Engine Load
There are several choices for engine load reading;
Normal Aspirated
TPS for load (preference due to giving best throttle response and easy mapping)
MAP for load
Turbocharged / Centrifugal Supercharged
MAP for load
Boost Correction fuel mapping with MAP for load ignition mapping
Positive Displacement Supercharged
TPS for load
MAP for load
TPS for load
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