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miniDaqu — Manual 7.1 ECU and AUX Parameters
both ECUs (when two ECUs are used). The ECU combines data from AUX
box with its own data and outputs the combined data over CAN or RS-232.
Figure 19 illustrates an example with one ECU connected to Daqu using RS-
232 serial communication. The AUX box is optional.
AUXBOX
MAP
ECU A
miniDaqu
Baro pressure
RS232
6
x
C
H
T
6
x
E
G
T
6
x
A
U
X
TPS, MAT, OilP, OilT, FuelP
Figure 19: Block view of ECU connection over RS-232 protocol.
Figure 20 illustrates an example with one ECU connected to Daqu using CAN
bus. The AUX box is optional.
AUXBOX
MAP
ECU A
Baro pressure
1
2
0
R
1
2
0
R
CAN
TPS, MAT, OilP, OilT, FuelP
6
x
C
H
T
6
x
E
G
T
6
x
A
U
X
miniDaqu
Figure 20: Block view of ECU connection over CAN bus.
Figure 21 illustrates an example with two ECUs. In this case only CAN bus
can be used. The AUX box is optional.
7.1 ECU and AUX Parameters
According to ULPower documentation the ECU provides the following param-
eters: RPM, throttle position, engine compartment ambient pressure, air(box)
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