aconis
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Posts posted by aconis
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Can you guys suggest me if there is any Link ECU which can control factory A340 transmission as I want to replace my current aftermarket ECU. For the rest options I need to have Link is covering everything, I am just in doubt about AT control. It is 5 solenoids transmission.
Cheers. -
39 minutes ago, Adamw said:
Sorry for the slow reply.
The firing order wont allow semi sequential with the conventional way we do it in Link, but you can do a small fudge to make it work semi-sequential.
In the software, set the firing order to 1,2,3,4,5,6,7,8,9,10,11,12.
Wire inj drive 1 to cyl 1&4, inj drive 2 to cyl 9&8, Inj 3 to 5&2, etc...
Then you can inject fuel sequentially on cylinders with TDC's 60 deg apart. So the first cyl of the pair will get its fuel injected 30deg later than ideal and the 2nd cyl will get its fuel 30deg earlier than ideal.
In regards to fuel timing, what would be the ideal injection time anyway? To the open intake valve or right after the exhaust valve is closed? Many people says it should be injected against closed valve.. I understand on high load when injector duty is nearly 80% it doesn't make a big difference, but on the low load and cruising it does, i think.
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6 minutes ago, Adamw said:
Sorry for the slow reply.
The firing order wont allow semi sequential with the conventional way we do it in Link, but you can do a small fudge to make it work semi-sequential.
In the software, set the firing order to 1,2,3,4,5,6,7,8,9,10,11,12.
Wire inj drive 1 to cyl 1&4, inj drive 2 to cyl 9&8, Inj 3 to 5&2, etc...
Then you can inject fuel sequentially on cylinders with TDC's 60 deg apart. So the first cyl of the pair will get its fuel injected 30deg later than ideal and the 2nd cyl will get its fuel 30deg earlier than ideal.
Thanks a lot! This is awesome answer! ;-)
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On 3/10/2021 at 11:36 PM, aconis said:
And if firing order is: 1-4-9-8-5-2-11-10-3-6-7-12 ?
As far as I understood there is no sense to pair injectors same as wasted spark ignition coils: 1-11, 4-10, 9-3, 8-6, 5-7, 2-12 due to we don't want to leave fuel wetting on the port walls and it is better to pair in adjacent cylinders according to firing order, i.e. 1-4, 9-8, etc.
Can anyone confirm it? -
1 hour ago, aconis said:
And if firing order is: 1-4-9-8-5-2-11-10-3-6-7-12 ?
Hope this table taken from engine manual can be helpful.
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On 8/23/2020 at 3:01 AM, Adamw said:
What’s the firing order?
And if firing order is: 1-4-9-8-5-2-11-10-3-6-7-12 ?
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On 3/8/2021 at 7:59 AM, Adamw said:
All of our ECU's support 12cyl, even the baby Atom.
The Thunder can do 2 DBW and has 2 internal lambda controllers - but be aware it is our older G4+ generation so doesnt have some of the newer features that the G4X ecu's have. We dont have a Thunder in the G4X platform.
The other option would be something like our G4X Fury or Xtreme, these both have 1 x DBW controller onboard and will soon be able to do 2 x DBW with the addition of our external module. I believe we have the 2 x DBW firmware working on the bench but it hasnt been widely tested on real engines yet so that capability should not be too far away. The Fury has one onboard lambda controller so would need one extra if you want to do dual bank closed loop, the Xtreme has no built in lambda controllers so would need 2 external controllers.
A basic overview of the differences on this chart: https://linkecu.com/products/ecu-comparison-chart/
So, basically both Fury and Xtreme can do the job but the only difference is lambda controller.
If Xtreme doesn't have onboard lambda controller this means engine will run according to the maps initially tuned without action taken if AFR doesn't match, am I right?
And if I use Fury I would need second lambda controller connected via CAN to maintain second bank closed loop control? -
6 hours ago, Adamw said:
We dont currently have any ecu's with 12 injector drives, so anything we can offer can only do grouped injection. 2 x DBW is possible with a G4+ Thunder and some of the smaller G4X ecu's (Xtreme etc) will soon be capable of 2 x E-throttle (using an external H-bridge).
We dont have good MAF support and dont have support for 4 knock sensors.
So if I run grouped injectors (6 groups) and if I switch to single DBW throttle will I still be limited by ECU supporting 12 cylinders, such as G4+ Thunder or in such setup I have more choice?
In regards to knock sensors I think I can use one from each bank and the rest connect to independent knock detecting device.
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Hello everyone.
I need a help to chose proper ECU to run my NA V12 engine swap.
It is 12 injectors, 6 wasted spark, 4 KNOCK SENSORS, 2 DBW throttle and 2 MAF sensors (considering switching to a new intake plenum and using 1 DBW throttle and MAP sensor).
The car I’m swapping engine to is BRZ 2012.
Thanks to everyone who can give me an idea of what ECU will work for me.
2JZ + AT ECU choice
in G4x
Posted
Sad news. Thanks anyway.