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Old 01-14-2008, 05:01 PM   #16
Tea cups
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Member#: 103136
Join Date: Dec 2005
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Quote:
Originally Posted by Phatron View Post
Mine did this before also. I was confused since my step value is set to 4. And it just went to 15 then back up to 16 in ~1 mile of normal driving. I have had it go 16, 14, 15, 16 in ~1 mile before too. The couple times it did it, it always got back to 16 before i got to my logging road and it stayed at 16 during the runs.
The step value you can modify in Enginuity/Ecuflash is the INITIAL step value. So, when the session begins, the step value is set to 4. When IAM changes directions during the re-evaluation, the step values is halved (2). When it changes direction once again, it is halved once again (1), applied, and then the session is done. This is how the ecu determines when to end the session, when the current step value is <=1 (alternatively, if IAM reaches 0 or 16 for a period of time the session will also end). The idea behind this is to determine the proper IAM based on where it "settles".
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