Instruction manual

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2 Outline of functions
The following functions are seen in the YMS.
 To read data from ECU, edits fuel adjusting map and ignition map, and writes in ECU.
 To read saved data, and after confirming the contents and editing, writes in ECU.
 To read saved data, and compares with ECU data or other saved data.
2–1 YZF-R6
2–1–1 Function outline of the YEC FI Matching System
Map items Functions Contents
(1) Shifter / Cut Time Sets ignition cut time
by each gear
Setting possible by each gear within scope of 0
to 150 ms.
When shifter/cut time (***)=0 ms is set, the
selected gear flameout control can be
ineffective.
(2) Comp. FUEL /
Map 1
Adjusts A/F Corrects fuel amount by increasing-decreasing
within range of ±30%
Effective at 1,000 rpm and higher (Not
corrected at less than 1000 rpm)
Map 1 or Map 2 can be selected with the map
switch. (Contact open: Map 1, contact closed:
Map 2)
(3) Comp. FUEL /
Map 2
(4) Offset IGNITION Corrects ignition time Corrects ignition timing within range of -15° CA
to 5° CA
Effective at 3000 rpm and above. (Does not
make corrections at less than 3000 rpm).
(5) Comp. ETV /
Acceleration
Corrects ETV opening
(Acceleration
correction)
Corrects basic ETV opening within a range of
-100% to 0%.
Example: Suppress torque by inputting -20% to
the area of high opening at low revolution.
(6) Comp. ETV /
Engine Brake
Corrects ETV opening
(Engine brake
correction)
Corrects basic ETV opening between 0 and 50
steps
(Automatically limits to a maximum value within
the ECU by an operating range).
Enables adjustment at different engine speeds
(and independently for each gear)
(7) Comp. FUEL / All
Area
Adjusts A/F Has same function as (2) Comp. Fuel and
makes uniform correction of operation areas.
Corrects increase-decrease of fuel amount
within a scope of ±30%.