Evo anti-lag ECU disassembly
ok been out testing all morning,
and this is what I found,
firstly I connected a vacuum gauge between the SAS valve and the vacuum line,
so I could see when the valve opens,
and as expected it opens on lift off throttle when all the parameters are met in the SAS tables,
it opens after the delay time and stays open for 4 seconds even when the air inject times in the large table are all set to zero,
it still injects for 4 seconds,
but the fuel inject table has no effect,
all it does is acts like the dump valve and instead of dumping the boost it injects it into the exhaust manifold,
to get proper antilag the inject time will have to be extended and somehow get the timing to retard and dump fuel also,
looks like this will have to be done in the fuel and timing tables.
and this is what I found,
firstly I connected a vacuum gauge between the SAS valve and the vacuum line,
so I could see when the valve opens,
and as expected it opens on lift off throttle when all the parameters are met in the SAS tables,
it opens after the delay time and stays open for 4 seconds even when the air inject times in the large table are all set to zero,
it still injects for 4 seconds,
but the fuel inject table has no effect,
all it does is acts like the dump valve and instead of dumping the boost it injects it into the exhaust manifold,
to get proper antilag the inject time will have to be extended and somehow get the timing to retard and dump fuel also,
looks like this will have to be done in the fuel and timing tables.
ok been out testing all morning,
and this is what I found,
firstly I connected a vacuum gauge between the SAS valve and the vacuum line,
so I could see when the valve opens,
and as expected it opens on lift off throttle when all the parameters are met in the SAS tables,
it opens after the delay time and stays open for 4 seconds even when the air inject times in the large table are all set to zero,
it still injects for 4 seconds,
but the fuel inject table has no effect,
all it does is acts like the dump valve and instead of dumping the boost it injects it into the exhaust manifold,
to get proper antilag the inject time will have to be extended and somehow get the timing to retard and dump fuel also,
looks like this will have to be done in the fuel and timing tables.
and this is what I found,
firstly I connected a vacuum gauge between the SAS valve and the vacuum line,
so I could see when the valve opens,
and as expected it opens on lift off throttle when all the parameters are met in the SAS tables,
it opens after the delay time and stays open for 4 seconds even when the air inject times in the large table are all set to zero,
it still injects for 4 seconds,
but the fuel inject table has no effect,
all it does is acts like the dump valve and instead of dumping the boost it injects it into the exhaust manifold,
to get proper antilag the inject time will have to be extended and somehow get the timing to retard and dump fuel also,
looks like this will have to be done in the fuel and timing tables.
Oracle has just posted on the MLR that a mbc could be used to control the SAS valve.
So I guess that would give us the amount of time it opens that we would need.
Then it's just a case of getting the timing and fueling correct ???
also I have tried every different setting to get this to operate while at a standstill and it never works,
its like its the wrong addresses or this part of the routine is not active and there is another routine for sas,
as none of the parameters had any effect on the SAS operation.
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I will be testing this flash later today. Just to re-iterate, Oracle1 has gotten his and other setups to work with ALS by just altering these maps without any of the SAS hardware.
Last edited by silex; Mar 17, 2008 at 11:24 AM.
I received the first altered map from Oracle1. It appears JB was right about the addresses being right for all the single digit tables (Oracle1 verified as well) so we're almost there for USDM IX's! The ALS Air Injection Time is still incorrect. The only other change was made on High Octane Ignition Map 2 from 0 to 20 load at 4k to 6k RPM:
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I will be testing this flash later today. Just to re-iterate, Oracle1 has gotten his and other setups to work with ALS by just altering these maps without any of the SAS hardware.
-10 -10 0
-10 -10 0
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I will be testing this flash later today. Just to re-iterate, Oracle1 has gotten his and other setups to work with ALS by just altering these maps without any of the SAS hardware.
What I understand to be ALS is direct injection of air into the exhaust manifold. I've heard it on an ECUTEKed JDM IX and it sounds like a rapid fire large calibre gun off, which continues until you come back on the accelerator.
Not good news, I'm afraid.

My tuner friend found another table in the JDM IXs with anti-lag working that wasn't in the JDM VIIIs rom id.
He's since fixed it so that it is and tried it on a JDM VIII, with no success. I'll post up the table when he emails it over to me.
anyway find out what this table is, all is not lost yet we might still be able to do this.
essaie cette la pour le timing retard limit l ami
pour voir si ca marche
sur l evo8 FQ300 et evo7 ralliart sa marche
je l ai placer entres ces 2 cases
et je trouve l adresse 188
<table name="Min Temp for Full Boost Control" address="21fe"/>
<table name="Timing Retard Limit"category="Timing"address="173f"type="1D"leve l="1"scaling="uint8"/>
<table name="Boost Enhancement Adv/Ret Map 1 (Anti-lag)" address="4b9f">
<table name="Load" elements="11"/>
<table name="RPM" elements="14"/>






