11
MINITune
2
User Manual
Variables Introductions in Display Mode:
Recommend Tuning Process for RCMINI2
NO
Name
Description/Unit
NO
Name
Description/Unit
1
RPM
Engine Speed
11
At
Atmosphere (kPa)
2
SA
Spark Angle (CA)
12
Bat
Battery Voltage(V)
3
WAF
Wideband Air Fuel Ratio
13
O2V
Narrow Band Oxygen Sensor Voltage (mV)
4
AFR
Target Air Fuel Ratio
14
CL
Close Loop Fuel Correction Rate (%)
5
TAir
Intake Air Temperature (
℃
)
15
WBCL
Wideband AFR Close Loop Indicator (01:ON / 00:OFF)
6
TEng
Engine Temperature (
℃
)
16
Malf
Malfunction (01:Malfunction Act / 00:No Malfunction)
7
TPS
Throttle Position (%)
17
ISC
Idle Speed Control %
8
FA
Fuel Adjustment (%)
18
MisC
Crank error Count
9
PW
Fuel Pulse Width (ms)
19
Product ID ECU ID
10
Inj
Injector Usage Rate (%)
20
“Fuel Base” setting
：
Adjust
“Fuel Base” to check if WB AFR data are between
12~13.5 in idle & open throttle without loading.
And then,
you can hold the rear brake slightly to check if WB AFR
closed to 12~13.5 with loading. Do some adjust of Fuel
Base to make WB AFR close to target AFR with & without
loading.
“Fuel Adj” for full range adjustment on road load
：
Please adjust and check the WB AFR data on
“TPS 5%”(<
5%),
“TPS 15%”(<15%), “TPS 30%”(<30%) and then adjust &
check the WB AFR data on
“TPS 70%” (> 70%)
“Spark Angle” adjustment
：
Adjust
“Spark Angle” for best performance in WOT
without knocking. If knock happens in any situation,
please retard the
“Spark Angle” to avoid knock.
Use Default MAP inside or download Map on Cloud database.
Then start engine till warm up over 80
°
C
The other items adjustment
：
You can check the setting of
“Fuel Acc”, “RPM of Idle”,
“RPM Limiter”, “WB O2 CL”, “Dec Fuel Cut”…etc
The mechanism of ECU & MiniTune2 data:
The adjustment data will be uploaded and saved to ECU
from MiniTune2. But the data in MINITune2 will be
deleted if user key off the power (Or user can use
“
MAP
Set
”
function to save it in MiniTune2) and MiniTune2 will
read back the data from ECU when user key on the
power again.
☆
Tips
：
1. Before tuning, please confirm your RCMINI
Plus2 ECU type match with your target vehicle.
2. For the best tuning result, please use AF1
wideband AFR module (WB AFR) for setting.
☆
Tips
：
If the engine volume bore up from stock 125cc to
155cc, please set
“Fuel Base” =124%
(
155
125
=124%
)
If also upgrade injector flow to 25%, please set
“Fuel Base” =99% (
155
125
÷
125% = 99%
)
☆
Tips
：
User can check the low loading(TPS<30%) WB
AFR status & adjust that by control rear brake in
moderation when main stand on, and then check
the WOT WB AFR status & adjust that on the
chassis dyno or on the road.
☆
Tips
：
User can adjust spark angle for best performance
on dyno meter.