J.P. Instruments EDM 900 Pilots Guide - Manual (Page 24)

Page 24 Engine Data Management
Fuel Remaining Est. REM XX GAL In gallons, liters,
pounds or kilograms
Fuel required to next
GPS WP or Destination
at present power
WP REQ XX GAL
Present with GPS
interface, valid signal
and way point
Fuel Reserve at next
GPS WP or Destination
Est. WP REM XX GAL
Present with GPS
interface, valid signal
and way point
Nautical Miles per Gal ECON XX.X MPG
Present with GPS
interface and valid
signal. MPK, MPL,
MPP for dif units
Time to Empty
Est. T to E XX:XX H:M
Hours: minutes
calculated remaining
at current fuel burn.
Total Fuel Used USD X.X GAL Since last refueling or
trip total.
Section 5 - LeanFind
The EDM supports two methods of leaning; ROP (Rich Of Peak) and
LOP (Lean Of Peak). Note: on power-up, the unit defaults to
Rich Of Peak mode, but is easily changed to Lean Of Peak mode. During
Rich Of Peak leaning, you’ll finalize the mixture to about 20° to 80° rich of
peak (depending on engine operating requirements). However, with the
advent of closely balanced injectors (such as GAMI), it is possible to set
the mixture lean of peak—thus saving fuel and running the engine cooler.
Both Rich Of Peak and Lean Of Peak processes are described in detail in
this manual.
Upon reaching cruise configuration, use the LeanFind mode to identify
the correct cylinder to reach peak EGT (for Rich Of Peak this is the
FIRST to peak, for Lean Of Peak this is the LAST to peak). To change
from one method to the other, right after activating LeanFind, hold STEP
and LF and the other method will be momentarily shown: ROP (Rich Of
Peak) or LOP (Lean Of Peak). Release buttons after other method
appears.