MK3 AEM EMS information

[funky_monkey58]

MAP Sensor
There are 3 wires on a MAP sensor. It requires MAP signal, 5V reference, and sensor ground. If you're using an AEM MAP sensor: MAP signal is green or white, 5V reference is red, and sensor ground is black. The signal wire needs to be dedicated, meaning that should be the only wire making contact with that pin. The sensor ground and 5V reference wire can be tapped. Please follow the pin out below to wire in your MAP sensor. If you did everything correctly, with an AEM 3.5 bar MAP sensor, your MAP voltage (setup/sensors/map sensor parameters) should be about 1.6V with the key on engine off, with an AEM 5 bar MAP sensor, your MAP voltage should be about 1.3V with the key on engine off. Remember to select the correct sensor in your MAP sensor wizard.


MAP signal - Pin 17A
Sensor ground - Pin: 9B and 4C (tap to one of these)
5V Reference - Pin: 1B (tap to this pin)

Air Intake Temp. Sensor
There are 2 wires on a AIT sensor. Polarity does not matter. It requires AIT signal and sensor ground. Please follow the pin out below to wire in your AIT sensor. Remember to select the correct sensor in you AIT sensor wizard.

AIT signal - Pin 3B
Sensor ground - Pin: 9B and 4C (tap to one of these)

Boost Solenoid
There are 2 wires on a boost solenoid. Polarity does not matter. It requires switched 12V and PW2 on EMS. Please follow the pin out below to wire in your boost solenoid.

PW2 - Pin 1C


Wideband (this is for EMS without built in wideband)
If you're using 30-4100 (Gauge type wideband controller), 30-2300/2301 (Dual/Single channel wideband controller), or other wideband controller with a 0-5V output, you will need to tap the 0-5V output wire to the O2#1 or O2#2pin on your EMS. White wire on 30-4100, and orange wire on the 30-2300/2301. Please follow the pin out below to wire in your wideband.

O2#1 - Pin 6B
O2#2 - Pin 14B


To setup the sequential injection follow this.

Injector 4 pin 10C
Injector 5 pin 11C
Injector 6 pin 12C

Then to set it up in AEM pro.
Click "options" then "injectors"
Injectors 1,2,3,7,8,9,10 should be set to "active" and "O2 feedback 1" and "primary"
4,5,6 should not have anything selected.

Then go to "fuel" and then "advanced fuel" then "injector phasing" and finally "options"

Set the injector phase to 0
Inject Tooth #01=19.00
Inject Tooth #02=11.00
Inject Tooth #03=3.00
Inject Tooth #04=0
Inject Tooth #05=0
Inject Tooth #06=0
Inject Tooth #07=15.00
Inject Tooth #08=23.00
Inject Tooth #09=7.00
Inject Tooth #10=0

After that you should be good to go on sequential fuel.



Ignitor options.

Toyota DH61


OEM PIN NAME ~~ DH61 PIN name
B+ ~~ +B
*body ground* ~~ GND *Need to add pin here to ground the ignitor
IGT ~~ T1
IGDA ~~ T2
IGDB ~~ T3
IGF ~~ not used for AEM, **good wire for ECU re-pin for MAP sensor
IG1 ~~ C1 We drove coil 1-6
IG2 ~~ C2 We drove coil 2-5
IG3 ~~ C3 We drove coil 3-4
IG- ~~ Tach

Part numbers:
89621-30030 - DH61 Igniter **These change from year to year, and IS's and GS's are different
90980-11653 - Housing, Connector
82998-12440 - Terminal, Connector

Mitsubishi 3kgt ignitor, I recommend not using this one as it requires the use of a tach driver for the gauge.
VB - 12 volt positive
GND - Ground
IB1 - coil output #1 from AEM (factory iGt wire)
IB2 - coil output #2 from AEM (factory iGda wire)
IB3 - coil output #3 from AEM (factory iGdb wire)

OC1 - output to coils 1 - 6
OC2 - output to coils 2 - 5
OC3 - output to coils 3 - 4





To set up the new ignition system in AEM Pro follow these steps.


*Ignition*
*Advanced Ignition*
*Ignition Phasing*
*Options-Ign phasing*
Then there will be a table, set the perimeters to the following.

Ignition sync: 0.16
Pickup Delay Comp: 130.00

IGN Tooth #1: 21.53
IGN Tooth #2: 1.53
IGN Tooth #3: 5.53

IGN Tooth #4: 0.00

IGN Tooth #5: 0.00

IGN Tooth #6: 9.53

IGN Tooth #7: 13.53

IGN Tooth #8: 17.53

IGN Tooth #9: 0.00

IGN Tooth #10: 0.00


Then to turn off the multi-plexing
*Ignition*
*Advanced Ignition*
*Multi-Plex Coil*
*Options*
The uncheck the box that says "Ign Mux Ign#1"


To run the IS300 coils you will need to run the setup wizard for the coils to do this in AEM Pro follow these steps.
*Ignition*
*Advanced Ignition*
*Coil Dwell Setup*
*Coil Dwell Wizard*
Select "Toyota Coil (93-98 3.0L Non Turbo)

With that you should be set to start the tuning process.

Thanks to Steve (toyotanos) For the information on the DH61 wiring, and to Sean (Xman) For helping me when I was first setting up my AEM EMS.

[emiliorescigno]

And the point of this thread is...?

[bgrieger]

information my man. This information allows anyone looking to go AEM to resolve 2 tuning issues many want to work around: batch fire fuel and how to make it work with an ignitor that will work with the stock tach. The stock ignitor is often a pain to wire in to work with it. If you go to an aftermarket ignitor, you then get into using a tach adapter. This makes the process cheaper, cleaner and quicker to set up and install.

[funky_monkey58]

Emilio is my roommate, he just has to give me a hard time sometimes.

If anyone is going this route they can feel free to pm me and I will help out as much as possible, and could even supply a startup calibration.