cold start enrichment table
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Still working on finding all the relevant tables. For the Evo 9, the rabbit hole is pretty deep for this startup enrichment stuff.
Last edited by mrfred; Jun 16, 2008 at 09:50 PM.
This just helps out the cold start? Like, driving right after you start up the car? or during idle warm up? My car has cams, and starts up fine (usually), but idle's kinda funky for the first 15secs or so.. I messed around with the ISCV tables and its a little smoother now..
But before I touched my ISCV tables...
Here's my question, with my car, fully warmed up, AC off, the car idles normally (about 1050rpms) and at the same rpm consistently, but sometimes the sound gets all lopey?? but it only happens for a few seconds at a time, then goes away.
When I turn my AC on, at idle, the target idle changes to about 850rpms, and my car idles slightly lower with AC on (around 950rpms), but sounds just like stock, and is so so smooth. No lopeyness, no bumpiness, just smooth idle, doesnt even sound like cams at all.
Now, how can I get my normal idle, without AC on, to do this?
I can post my ISCV tables, but they are now different from what I just described..
Any help would be greatly appreciated.
But before I touched my ISCV tables...
Here's my question, with my car, fully warmed up, AC off, the car idles normally (about 1050rpms) and at the same rpm consistently, but sometimes the sound gets all lopey?? but it only happens for a few seconds at a time, then goes away.
When I turn my AC on, at idle, the target idle changes to about 850rpms, and my car idles slightly lower with AC on (around 950rpms), but sounds just like stock, and is so so smooth. No lopeyness, no bumpiness, just smooth idle, doesnt even sound like cams at all.
Now, how can I get my normal idle, without AC on, to do this?
I can post my ISCV tables, but they are now different from what I just described..
Any help would be greatly appreciated.
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EvoM Guru
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From: Tri-Cities, WA // Portland, OR
This is more about what is happening when the starter is engaged.
The ISCV tables are starting points for the idle air flow valve stepper motor. The target idle tables are what you want to change along with the ISCV values, but the target idle tables in the current version of ECUFlash are incorrectly defined. There is a thread somewhere in this forum on how to find the correct tables.
The ISCV tables are starting points for the idle air flow valve stepper motor. The target idle tables are what you want to change along with the ISCV values, but the target idle tables in the current version of ECUFlash are incorrectly defined. There is a thread somewhere in this forum on how to find the correct tables.
This is more about what is happening when the starter is engaged.
The ISCV tables are starting points for the idle air flow valve stepper motor. The target idle tables are what you want to change along with the ISCV values, but the target idle tables in the current version of ECUFlash are incorrectly defined. There is a thread somewhere in this forum on how to find the correct tables.
The ISCV tables are starting points for the idle air flow valve stepper motor. The target idle tables are what you want to change along with the ISCV values, but the target idle tables in the current version of ECUFlash are incorrectly defined. There is a thread somewhere in this forum on how to find the correct tables.
And how will this mod affect my idle? What does it fix/help?
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I don't know where the thread is. You'll have to search for it. The thread should have the correct idle tables so that you can change your idle.
So the table edit in the first post still needs some work? can anyone post the final version for the 0015 rom? And will the stock injector latency values be the same if I have larger injectors? I had my injectors scaled by someone else a while back. My number (14v) is like .936 instead of .432 ??
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So the table edit in the first post still needs some work? can anyone post the final version for the 0015 rom? And will the stock injector latency values be the same if I have larger injectors? I had my injectors scaled by someone else a while back. My number (14v) is like .936 instead of .432 ??
I have experienced a couple of the issues outlined in this thread (PTE 780cc). I had the warm start issue too and I thought there was a chance it was leaky injectors. After some investigation I am almost positive this is not the case. Anyhow I have messed with the fuel table and the IPW adder for startup and it is pretty much completely fixed. I ended up subtracting fuel at a couple of the values in the middle of the temperature range (34C and 50C).
I also experience the lean condition on cold drive off. With what I experience there has to be a table to describe the IPW adder for a running condition in the IX. It is only when it is cold and really only takes about 30-45 seconds to go away, less the warmer the car is.
I also experience the lean condition on cold drive off. With what I experience there has to be a table to describe the IPW adder for a running condition in the IX. It is only when it is cold and really only takes about 30-45 seconds to go away, less the warmer the car is.
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First post in this thread has been updated with data showing that the observed IPW values during startup are dead on with the table values. For Evo 9s, the table definition I listed in the first post is the table to use to adjust startup enrichment control.
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