Evo anti-lag ECU disassembly
Mar 17, 2008, 12:11 PM
#256
Evolving Member
iTrader: (3)
Join Date: Aug 2006
Location: Ireland
Posts: 264
Likes: 0
Received 0 Likes
on
0 Posts
at least then we could try and disassemble or even poke around and see how they do it.
Mar 17, 2008, 12:34 PM
#257
Evolved Member
iTrader: (26)
Join Date: Nov 2005
Location: San Diego, CA
Posts: 717
Likes: 0
Received 0 Likes
on
0 Posts
What table do the 9's have that the 8's don't? I can poke around my ROM and see if I can pull the code for you guys.
I will test this map in 5 hours and report back. ECUTek is none other than a software remap. It changes the same timing, ALS tables, and possibly fuel that we are doing manually.
Here's my take on how the SAS hardware works. Fuel in the exhaust manifold is necessary to get the effect for ALS. No question about it. Retarded timing just moves the combustion process to the exhaust manifold at the spec'ed loads and RPM. With the SAS hardware, I believe timing is left alone. Instead, more fuel is dumped in similar cells compared to timing. This means there will be extra fuel leftover for the combustion. The SAS hardware injects air at the precise time this extra fuel hits the mani. This ensures that it is ignited instead of having to rely on a HOT manifold. Thoughts?
Is that not just the odd rumble and pop on changing gear/ let off though?
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.
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.
Here's my take on how the SAS hardware works. Fuel in the exhaust manifold is necessary to get the effect for ALS. No question about it. Retarded timing just moves the combustion process to the exhaust manifold at the spec'ed loads and RPM. With the SAS hardware, I believe timing is left alone. Instead, more fuel is dumped in similar cells compared to timing. This means there will be extra fuel leftover for the combustion. The SAS hardware injects air at the precise time this extra fuel hits the mani. This ensures that it is ignited instead of having to rely on a HOT manifold. Thoughts?
Last edited by silex; Mar 17, 2008 at 01:24 PM.
Mar 17, 2008, 01:09 PM
#258
Evolved Member
iTrader: (26)
Join Date: Nov 2005
Location: San Diego, CA
Posts: 717
Likes: 0
Received 0 Likes
on
0 Posts
Somebody try these addresses out for USDM IX's as they seem to get me the correct calls:
ALS Air injection time
Timesecbyte = 40b3 through 40bb
RPM = 6f08
I'm not sure about the Time address as there appears to be a range of hex that works so maybe I'm digging in the wrong parts.
ALS Air injection time
Timesecbyte = 40b3 through 40bb
RPM = 6f08
I'm not sure about the Time address as there appears to be a range of hex that works so maybe I'm digging in the wrong parts.
Last edited by silex; Mar 17, 2008 at 01:11 PM.
Mar 17, 2008, 01:29 PM
#261
Mar 17, 2008, 01:36 PM
#263
Evolved Member
iTrader: (26)
Join Date: Nov 2005
Location: San Diego, CA
Posts: 717
Likes: 0
Received 0 Likes
on
0 Posts
Settings attached for JDM IX running ALS. One note to make is that all timing tables for High Octane Ignition Map 1 to 4 are the same as the one shown. Hope one of you JDM or EDM Evo's can get it working now with these settings 
Even better if someone can test it who doesn't have SAS hardware otherwise must wait until tonight for me to see what happens 
ALS Fuel injector time is a bit hard to see. It is 4.8s.
Even better if someone can test it who doesn't have SAS hardware otherwise must wait until tonight for me to see what happens ALS Fuel injector time is a bit hard to see. It is 4.8s.
Last edited by silex; Mar 17, 2008 at 02:41 PM.
Mar 17, 2008, 02:59 PM
#265
Settings attached for JDM IX running ALS. One note to make is that all timing tables for High Octane Ignition Map 1 to 4 are the same as the one shown. Hope one of you JDM or EDM Evo's can get it working now with these settings Even better if someone can test it who doesn't have SAS hardware otherwise must wait until tonight for me to see what happens
ALS Fuel injector time is a bit hard to see. It is 4.8s.
Even better if someone can test it who doesn't have SAS hardware otherwise must wait until tonight for me to see what happens ALS Fuel injector time is a bit hard to see. It is 4.8s.
Mar 17, 2008, 03:28 PM
#267
We're not sure what the problem is, but at a guess it seems the tables aren't referecing the correct addresses, even though when they are originally opened they have sensible values in.
I have had my rom changed by Oracle1 above, and he has activated and experimented with ALS on his JDM IX, as well as had them looked at by GrayW above, who is also an experienced tuner, so it's not an end user problem.
Mar 17, 2008, 04:13 PM
#269
Evolved Member
Thread Starter
My brain will explode if I get back into this along with the realtime stuff, but I believe you do need the ignition retard.
* The ignition continues to fire even on the over-run.
* The fuel is injected into the inlet ports (or onto the back of the inlet valve).
-> therefore you'd have a very rich mixture (closed throttle) being ignited in the cylinder if you used normal ignition timing.
So the way I see it is that very late ignition timing combined with fuel starts the flame front in the cylinder through an open exhaust valve where it continues due to the air that is injected into the exhaust manifold.
So I think we will get a stronger anti-lag effect from longer air and fuel times, and sufficiently retarded ignition (e.g. -40 degrees but don't send me the bill for the melted exhaust valve or exhaust parts ). All I tested was a few rumbles as I didn't like it and didn't have EGT monitoring.
I think you are all on the right lines with the stuff you're posting
* The ignition continues to fire even on the over-run.
* The fuel is injected into the inlet ports (or onto the back of the inlet valve).
-> therefore you'd have a very rich mixture (closed throttle) being ignited in the cylinder if you used normal ignition timing.
So the way I see it is that very late ignition timing combined with fuel starts the flame front in the cylinder through an open exhaust valve where it continues due to the air that is injected into the exhaust manifold.
So I think we will get a stronger anti-lag effect from longer air and fuel times, and sufficiently retarded ignition (e.g. -40 degrees but don't send me the bill for the melted exhaust valve or exhaust parts
). All I tested was a few rumbles as I didn't like it and didn't have EGT monitoring.I think you are all on the right lines with the stuff you're posting