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Here is a list of the User definable features of the AEM ECU for the MKIV. 93-95 Supra 2JZGTE Pinout functions
All LS drives have a max 1.5 amp draw and are a (-) output
All HS drives have a max 4 amp draw and are a (+)12v output

2A Vehicle Speed Sensor
6A Malfunction Indicator Lamp (Low side drive) LS10
7A Gear Position input (Reverse)
9A Gear Position input (2nd)
10A Gear Position input (1st)
17A Spare injector Output 10i (Inverted)
18A Manual trans mode selector switch (Ground input) or User defined switch input on Manual Trans
19A Spare injector Output 9i (Inverted)
20A Spare Pulse Width Output 1
23A ACMG to A/C Magnetic clutch (Low level ground)
25A Manual indicator mode light output (Auto Trans) or User defined output on Manual Trans
28A Over Drive Switch input (ground signal) or User defined switch input on Manual Trans
34A A/C to a/c amplifier(On is <1volt off is 10-12volts) HS2
37A Spare Pulse Width Output 2i (Inverted) Only available if boost control not used

2B Thermo Couple # 1 Signal input
4B Thermo Couple # 2 Signal input
8B Thermo Couple # 3 Signal input
9B Auto Trans Sol No2 (High side drive)S2 or User defined +12v switched out on Manual Trans HS3
10B Auto Trans Sol No1 (High Side drive)S1 or User defined +12v switched out on Manual Trans HS4
11B O2 sensor ground for external Wideband / Uego sensor
12B Auto Trans Sol No5 (Line Pressure) not used on Manual Trans
13B Auto Trans Sol No4 (Engagement Speed) or User defined spare injector 8 or switched output
14B Auto Trans Sol No3 (Converter Lock up) not used on Manual Trans
21B Input Shaft Speed sensor signal or spare Speed input on Manual Trans
22B Spare Speed input 1
23B Tail Shaft Speed sensor for Auto Trans or spare speed input on Manual Trans
24B Auto Trans Fluid Temp Sensor input or spare 0-5v input
29B Spare inverted Pulse Width output controlled with PW1
31B Auto Trans Sol No5 (SLT+) or User defined switched output
37B Spare user defined switched output IDLE 6
38B VSV For exhaust bypass valve (Low side drive) or user defined switched output LS4
39B VSV For Exhaust gas control valve (low side drive) or User defined switched output LS5
40B VSV For intake air control (Low side drive) or User defined Spare output LS3
45B Air temp sensor input
46B EGR gas Temp Sensor or User 0-5v input
47B Oxygen sensor input #2
48B Oxygen sensor input #1
49B Knock 2 input (Rear Knock Sensor)
50B Knock 1 input (Front Knock Sensor)
59B Spare user defined switched output LS11
60B Boost control solenoid for wastegate or User defined Pulse Width output
61B User defined Switched output LS8
62B Manifold pressure sensor input or User defined 0-5v input
66B Mass air flow sensor input or User defined 0-5v input
67B Thermo Couple #4 Signal input
68B User defined Switched output LS9
70B Spare injector output 7 or user defined switched output
71B Ox 1 Heater Ground or User defined Switched output LS12
72B Ox 2 Heater Ground or User defined Switched output LS2
73B Fuel Pressure up VSV (Low side drive) or User defined Switched output LS1
74B VSV For EVAP (Pulse Width) or Spare injector 9 or User defined Switched output
75B VSV For EGR (Pulse Width) or Spare injector output 10 or user defined Switched output
76B Gear position indicator (Neutral)



Built in datalogging 512k or up to 1hr
Sequential injection
Knock control
Closed loop control
Comprehensive Nitrous control
Complete Auto transmission control
Traction control
Anti-Lag
Boost control
Plug N Play
Run any amount of boost
Up to 16 user programable outputs depending upon configuration
Up to 7 user definable inputs depending upon configuration
Windows based software
4 EGT inputs with feedback control (RTD Type)
*All Stock Sensors are used
All factory accessories remain working


*If running over 15psi of boost, and using the system in speed/density mode the stock map sensor must be replaced with 3bar minimum.

Jason.
 
V

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Discussion Starter #5
When will the feature lists for other cars be available? Also, is there any update on the ship date?
 

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aem and na 6 speed

I have an N/A that i am turbo-ing i am going to a six speed out of a twin turbo. Will the AEM unit adapt to that?
 

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Blue 03 cobra I wish :)
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how much is it aem ecu
and I dont need boost controller and vpc if i upgraded to single turbo
 

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What I am really interested in is running a wideband O2 sensor all the time. How would I go about implementing this?

Also where can I get and how much is a 3 bar map sensor?

Finally I am wondering if the inputs are analog capable meaning instead of having a on/off switch may I have a dial that will increasingly/decreasingly adjust?
 

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Some answers...

Anti-lag - used by rally racers and road racers(?) most often. It's a process for sending a rich mixture out the exhaust in such a fashion that it's still burning in the exhaust manifold thus giving energy to the turbo(s). Not sure exactly how it's done but I believe that's how it works. Google is bound to have a ton of info on this - I'm curious about it too. I'm quite sure catalytic converters don't like it :D Some info -> http://www.rallycars.com/Cars/bangbang.html from http://www.google.com/search?q=turbo+anti+lag

Turbo a N/A? If the ECU fits a N/A then simply add a MAP sensor or use the MAF the way the turbo cars do. So long as the fuel and spark maps are right you're good. It won't care about the six speed. This ECU is the SAME for every ap, just a different plug and some differing features based on what the original ECU required in the way of I/Os - Jason has stated this about 5 times in another thread. You'd probably have to do some wiring for the MAP maybe but it ought to work fine if you do the research.

Cost? Read some of the other threads! :rolleyes: Retail is just under $2K. GBs are in the $1360 range. Chris @ Horsepowerfreaks is one of the ones doing a B, there are about a dozen others. One of the RX7 group is doing this too. There's at least one GB mailing list going as well.

Last ship date I heard was Feb 22nd but not from Jason. Febuary sometime anyway. No exact date from Jason has been given and he didn't give one here - perhaps it's out of his conrol? We'll get it when it's ready I guess.

WB - go find http://Techedge.com.au for information on a cheaper solution. These are OEM WB O2s run in Hondas that should last many MANY miles not the hours that older more expensive O2s lasted. Used in production vehicles and sold by Motec for way too much money they should work fine full time. The AEM ECU has tables for each sensor that can be modified - including the O2. I believe it will be possible to specify target A/F ratios and have the ECU correct to achieve those if it's anything like competing ECUs from Acell, FAST, and Motec. I intend to run a WB full time once my kit is completed. There's at least a thread or two here somewhere concerning these WB O2s. Unfortunatly building them isn't as easy as the old Heathkits :( The price is right - less than $300 for a working WB O2 w/display I believe. There's a very low volume mailing list for this kit too.

3BAR MAP sensors are available from GM - used in the Turbo TA and GNX. Cost is like $70 I believe. Check with a gM dealer or it's possible that AEM will supply one - we'll see. The Supra kit IS more expensive than the RX7 kit for the same ECU so perhaps this is part of the cost? Wait and see.

Some of the spare inputs will probably be analog. I've not had a chance to look at the new info Jason posted but will a bit later. Hopefully we can have enough spares to do some "interesting" stuff :D Any chance we could keep this thread focused on the use of the spare I/Os and keep the other questions in the 20page thread we've already got? (sigh) Much of this has already been answered at least once.
 

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Looked at them some (Long)

My comments with * below. Looks like the 6speed guys get a bunch more outputs\inputs which is what I geared my comments to :D. Not sure if we get notification of gear selection at all on the manual but if we do that's a BIG plus for boost control in the lower gears. Some emissions functions look like they might be there - hopefully programmed out of the box? I ASSume the numbers are the pins on the harness - if so a Field's Harness will be a big plus IMO. Anyone stocking them right now or does the AEM come with something of that sort maybe?

Jason, you mention some things as being user programable and don't mention on others - oversight or are there some I/Os more easily programmed? In other words are some easy to program to react to certain conditions and others "dumber"? Not sure I'm expressing that well :( For instance four "spare" injector outputs are mentioned - 2 inverted(?), can those be independantly controlled or are they slaved to the existing injector outputs?

Would we want to control the O2 heater ourselves? For regular O2s you would simply leave it on I'd think but WB are much more tricky to control - hence the conditioning and heater control boxes required. Could we run a WB heater control via the ECU perhaps? Not sure what the raw signal looks like. I'm specifically interested in the Honda UEGO (part # 36531-P07-003 - Honda Civic 1.5 3 Door, circa 1995, US, non-Californian model). This is what the Techedge kit uses and supposedly matches a $500+ unit Motec sells. Cost on this is $117 online and a bit more locally.

Traction control - mentioned in the other thread and here. Wiring required to do this, stock trac control, or based on stock wiring\inputs? I see no mention of ABS inputs on this listing but multiple speed inputs from the trans that I don't think would work for trac without an input from a front ABS sensor. Any elaboration would be VERY nice! ;) I think lot's of folks would like better than stock trac control.

(*Not Sure)
6A Malfunction Indicator Lamp (Low side drive) LS10 - (*run the stock light out of the box?)
7A Gear Position input (Reverse) - (*Auto only or 6speed too?)
9A Gear Position input (2nd) - (*Auto only or 6speed too?)
10A Gear Position input (1st) - (*Auto only or 6speed too?)
12B Auto Trans Sol No5 (Line Pressure) not used on Manual Trans - (*Can we use this? HS or LS?)
14B Auto Trans Sol No3 (Converter Lock up) not used on Manual Trans - (*Can we use this? HS or LS?)
76B Gear position indicator (Neutral) - (*Auto only or 6speed too?)
72B Ox 2 Heater Ground or User defined Switched output LS2 - (*OBD2 cars only use #2? OBD1 get a spare switched output then?)

(*Spare Outputs)
17A Spare injector Output 10i (Inverted)
19A Spare injector Output 9i (Inverted)
20A Spare Pulse Width Output 1
25A Manual indicator mode light output (Auto Trans) or User defined output on Manual Trans
28A Over Drive Switch input (ground signal) or User defined switch input on Manual Trans
9B Auto Trans Sol No2 (High side drive)S2 or User defined +12v switched out on Manual Trans HS3
10B Auto Trans Sol No1 (High Side drive)S1 or User defined +12v switched out on Manual Trans HS4
13B Auto Trans Sol No4 (Engagement Speed) or User defined spare injector 8 or switched output - (*Pulsed output?)
29B Spare inverted Pulse Width output controlled with PW1 - (*controlled pulsed output based on PW1? Nitrous maybe?)
31B Auto Trans Sol No5 (SLT+) or User defined switched output
37B Spare user defined switched output IDLE 6 - (*what's IDLE6?)
59B Spare user defined switched output LS11
61B User defined Switched output LS8
68B User defined Switched output LS9
70B Spare injector output 7 or user defined switched output - (*pulsed output?)

(Spare Inputs)
18A Manual trans mode selector switch (Ground input) or User defined switch input on Manual Trans
2B Thermo Couple # 1 Signal input - (*Jason mentioned these EGT inputs)
4B Thermo Couple # 2 Signal input - (*Jason mentioned these EGT inputs)
8B Thermo Couple # 3 Signal input - (*Jason mentioned these EGT inputs)
67B Thermo Couple #4 Signal input - (*Jason mentioned these EGT inputs)
21B Input Shaft Speed sensor signal or spare Speed input on Manual Trans - (*Can we use this?)
22B Spare Speed input 1 - (*any ideas on what to use this for?)
23B Tail Shaft Speed sensor for Auto Trans or spare speed input on Manual Trans - (*any ideas on what to use this for?)
24B Auto Trans Fluid Temp Sensor input or spare 0-5v input - (*temp sensor perhaps? Analog input it appears)

(*Stock Stuff)
23A ACMG to A/C Magnetic clutch (Low level ground) - (*tells us state of A/C clutch or we can control it? Stock climate control still works yes? WOT cutout maybe?)
34A A/C to a/c amplifier(On is <1volt off is 10-12volts) HS2
37A Spare Pulse Width Output 2i (Inverted) Only available if boost control not used - (*Why wouldn't you use the boost control?:))
11B O2 sensor ground for external Wideband / Uego sensor
38B VSV For exhaust bypass valve (Low side drive) or user defined switched output LS4 - (*Emissions?)
39B VSV For Exhaust gas control valve (low side drive) or User defined switched output LS5 - (*Emissions?)
40B VSV For intake air control (Low side drive) or User defined Spare output LS3 - (*Idle motor (IAC) usage?)
45B Air temp sensor input
46B EGR gas Temp Sensor or User 0-5v input - (Emissions?)
47B Oxygen sensor input #2
48B Oxygen sensor input #1
49B Knock 2 input (Rear Knock Sensor) - (*We have control over sensitivity? Attack\Decay?)
50B Knock 1 input (Front Knock Sensor)
60B Boost control solenoid for wastegate or User defined Pulse Width output - (*stock wastegate or solenoid we supply?)
62B Manifold pressure sensor input or User defined 0-5v input - (*stock MAP or one we supply?)
66B Mass air flow sensor input or User defined 0-5v input - (*can we use MAP and MAF together?)
71B Ox 1 Heater Ground or User defined Switched output LS12 - (*we can control the O2 heater? Would we want to?)
73B Fuel Pressure up VSV (Low side drive) or User defined Switched output LS1 - (*9->12volt fuel pump switchover on the OEM?)
74B VSV For EVAP (Pulse Width) or Spare injector 9 or User defined Switched output - (*programmed for EVAP out of the box?)
75B VSV For EGR (Pulse Width) or Spare injector output 10 or user defined Switched output - (*programmed for EGR out of the box?)

Phew, sorry so long guys but I'm REAL interested in this ECU and it looks like the Supra folks are getting a TON of I/Os to use our imagination on! If I'm going o blow $1300+ and stick it into a VERY expensive car I want to know as much about it as I can beforehand:p
 

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basupra said:
What is the anti-lag feature, and how does it work? I assume it is self-explanatory on what it does, but I want to know how it does it.

Thanks, Tim
Anti lag is mainly for racing but ignition timing is retarded and fuel is increased under high manifold vacuum. Fuel is forced to burn in the exhaust system which keeps the turbine spooled up to some degree during closed throttle.
 
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Discussion Starter #12
ATLSUPDAWG#2 said:


Anti lag is mainly for racing but ignition timing is retarded and fuel is increased under high manifold vacuum. Fuel is forced to burn in the exhaust system which keeps the turbine spooled up to some degree during closed throttle.
Actually when under anti-lag, there is pressure in the manifold, the idea is to set the target pressure, and the anti-lag tries to maintain that amount of boost. Example, when staged, typically there is no boost, or not much to speak of because there is no or little engine load. The anti-lag artificially creates load (as far as the turbo is concerned) spooling the turbo to the desired boost level.

Jason.
 
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Discussion Starter #13
(*Not Sure)
6A Malfunction Indicator Lamp (Low side drive) LS10 - (*run the stock light out of the box?)
7A Gear Position input (Reverse) - (*Auto only or 6speed too?)
9A Gear Position input (2nd) - (*Auto only or 6speed too?)
10A Gear Position input (1st) - (*Auto only or 6speed too?)
12B Auto Trans Sol No5 (Line Pressure) not used on Manual Trans - (*Can we use this? HS or LS?)
14B Auto Trans Sol No3 (Converter Lock up) not used on Manual Trans - (*Can we use this? HS or LS?)
76B Gear position indicator (Neutral) - (*Auto only or 6speed too?)
72B Ox 2 Heater Ground or User defined Switched output LS2 - (*OBD2 cars only use #2? OBD1 get a spare switched output then?)

Runs the stock check engine light out of the box, can also be configured as shift light, or any other user defined output.

Gear positions are Auto only. Manual trans doesn't need them, with vehicle speed and gear ratio input, the ECU knows what gear your in.

12B, and 14B are not available on Manual trans (work as antagonistic pair to user defined outputs on manual)

All MKIV Supras have 2 O2 sensors, you do not have to use them, and they would be avialable for other uses.

Neutral is used on both vehicles

Inverted injectors are tied to the same software trigger as their counterparts, but is a seperate driver (I.E. you could run staged injectors 9 and 9i and they would simply trigger at the same time for the same duty cycle)

Jason.
 

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Jason, quick question:

45B Air temp sensor input
46B EGR gas Temp Sensor or User 0-5v input - (Emissions?)

Is the Intake Air Temp input software selectable? I'd like to use input "46B" for air temp correction w/ speed density. Reason being, I've already wired a GM IAT to the toyco EGR sensor wires, since those wires are so close to the intake manifold (and I'm not running EGR). I'm assuming the 45B wires go to the MAF harness, no?


-Andrew
 
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Discussion Starter #16
3RDCHIRP said:
Jason,

Why will they not work with N/A 98 Supra's?
The 98 N/A Supras have a different plug than the rest. A universal system could be wired in.

Jason.
 
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Discussion Starter #17
TurboAndrew said:
Jason, quick question:

45B Air temp sensor input
46B EGR gas Temp Sensor or User 0-5v input - (Emissions?)

Is the Intake Air Temp input software selectable? I'd like to use input "46B" for air temp correction w/ speed density. Reason being, I've already wired a GM IAT to the toyco EGR sensor wires, since those wires are so close to the intake manifold (and I'm not running EGR). I'm assuming the 45B wires go to the MAF harness, no?


-Andrew
Nope, wire it to where the map sensor ait output was. The EGR is 0-5v the ait is a resistive type thermister.

Jason.
 

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<<Nope, wire it to where the map sensor ait output was. The EGR is 0-5v the ait is a resistive type thermister.

Jason.>>

OK no problem. I was going to use the EGR temp because the Toyota harness for EGR really is origianlly a resistive circuit, but if the AEM ecu somehow changes that, no problem. When you mentioned map sensor ait ouput, are you taling about the AEM ecu or the Supra harness? The Supra wiring diagram makes no mention of a map ait, only a MAF temp circuit, "terminal THA" in the Toyota electircal wiring diagram book.
 
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Discussion Starter #19
TurboAndrew said:
<<Nope, wire it to where the map sensor ait output was. The EGR is 0-5v the ait is a resistive type thermister.

Jason.>>

OK no problem. I was going to use the EGR temp because the Toyota harness for EGR really is origianlly a resistive circuit, but if the AEM ecu somehow changes that, no problem. When you mentioned map sensor ait ouput, are you taling about the AEM ecu or the Supra harness? The Supra wiring diagram makes no mention of a map ait, only a MAF temp circuit, "terminal THA" in the Toyota electircal wiring diagram book.
Sorry, I meant to type maf instead of map. So where the plug went to your mass air sensor, tap in to the air temp pin, and the 0v ground (sensor ground) at the plug for your air temp sensor.

Jason.
 
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Discussion Starter #20
Jason

Sorry to butt in on your mkiv talks, guys. Just a quick Q for The Man... :)

When will the AEM ECU be available for the New Age WRX?

I assume it will have similar levels of tunability...


Thanks a bunch.
 
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