AEM Controlling the trans?
- Thread starter tissimo
- Start date
Who carese what AEM Says. I mean wire up the auto ecu (2 Solenoids and lockup solenoid) to the ecu and have the aem features control it. Its possible with the software, and looks like the ecu should work on it fine (just uses standard outputs).SupraMan1987;1269695 said:
It can be done works fine..... But I know nothing about how at all, I just test drove one a few years ago that was a Aem with an auto, The guys not in the supra community anymore but ill see if i can get ahold of him, Also Aem did the tune on the car and all of the setup, I beleive his car was the frist 89-92 car they did.
Huge amount of logic involved to do this.
(I know the MoTeC 100 series can't handle it on it's own but the ADL2 can)
Be better having the AEM simulate the TPS signal to the ECT.
(I know the MoTeC 100 series can't handle it on it's own but the ADL2 can)
Be better having the AEM simulate the TPS signal to the ECT.
Sounds like about the right answer from Aem, they seemed to change staff about every 90 days when I dealing with them, But I have for sure been in ma70 running a AEM that was controlling, I do remember it had very hard upshifts and was told that he could control the trq coverter.
IJ.;1271898 said:
What logic is needed? just switching a few solenoids on and off for change gears really. We dont have to control the Line pressure with a solenoid or anything like the mkiv, just 3 wires (2 gear solenoids and lockup solenoid).
By eliminating the ect I can controll the shifts/downshifts converter lockup and everything, theres no reason not to use the features available.
You need a bunch of if/and/or statements to do it.
If you think you can pull it off with just switching solenoids by all means go for it and post your progress.
(I asked the MoTeC engineers to do this and they gave up after a week on the ECU and said the only real way to do it was to use an ADL)
example: how does your ECU know the car is accelerating up a hill and needs to kickdown a gear just using an on/off table?
If you think you can pull it off with just switching solenoids by all means go for it and post your progress.
(I asked the MoTeC engineers to do this and they gave up after a week on the ECU and said the only real way to do it was to use an ADL)
example: how does your ECU know the car is accelerating up a hill and needs to kickdown a gear just using an on/off table?
TPS input, unfortunately AEM doesn't have a 2th input for load on gear selection map, everything is based of TPS. It might be a little crude, but should work fine.IJ.;1272590 said:
Heres a pic of the mkiv basemap.
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it is a matter of lack of outputs that can handle the current draw.
Feed the stock trans ecu and call it a day. Requires three outputs from the EMS based on TPS position as that is how the stock config does it. That or you can do what Ian did and get a transcontroller.
This is an example, Ian got something different if I recall
http://www.tciauto.com/Products/Electronics/default.asp
Feed the stock trans ecu and call it a day. Requires three outputs from the EMS based on TPS position as that is how the stock config does it. That or you can do what Ian did and get a transcontroller.
This is an example, Ian got something different if I recall
http://www.tciauto.com/Products/Electronics/default.asp
Nick M;1325672 said:
I want to control the WOT shift points, gear selection, and converter lockup to my liking.
AEM EMS controls the mkiv trans perfectly fine (same gear selection setup, 2 solenoids), only need to wire in a relay for the converter lockup (aem ems isn't strong enough iirc).figgie;1329867 said:
Anyone should be able to do this, just have to wire in the gear solenoids & lockup solenoid to the ECU to get it to work. I think I've decided to leave my car bone stock though, so will not be trying it out my self.
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What are the 3 outputs that you need to run from the EMS to the trans computer? My Brother has an M800 in his auto Supra and left the stock EFI ECU and trans computer in there to run the trans, but if he can piss off all the standard wiring and just feed 3 wires to the trans computer that would make things cleaner, I also want to know in case I go auto myself down the track as I am manual M800 at this stage
You just need to set up 3>4x AUX outs to replicate the signals sent from the Toyota TPS to the ECT, this will give a very limited range of adjustment from the Factory behaviour.
For Aux Table 1 (L1 on the ECT). 35% to 100%. duty cycle should be Zero percent (0 V)
For Aux Table 2 (L2 on the ECT). 15% to 65%. Duty cycle should be Zero between these two sites.
For aux Table 3 (L3 on ECT) Between 7% and 25% & 50% to 85%. Duty cycle should be zero percent.
You also need another for the idl signal from memory.
For Aux Table 1 (L1 on the ECT). 35% to 100%. duty cycle should be Zero percent (0 V)
For Aux Table 2 (L2 on the ECT). 15% to 65%. Duty cycle should be Zero between these two sites.
For aux Table 3 (L3 on ECT) Between 7% and 25% & 50% to 85%. Duty cycle should be zero percent.
You also need another for the idl signal from memory.