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help with eratic tune changes

Old 12-19-2007, 09:29 AM
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Default help with eratic tune changes

My tune did something crazy today, it decided to go extremly lean on the low end with no changes to the tables. I realize that it has been colder outside , but i have driven it for about two weeks as a daily driver now and it was fine. the A/F went from (12.5-13.5) on the low end up to (16.5-17.5). any ideas on what might change this?

here is a quick rundown of my setup:
383 stroker
procharger on 12lbs
OLSD
Old 12-20-2007, 01:08 PM
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Well the car is back to normal now, I just retunned the low end. But it still bothers me that it just went lean with no changes. Before today I had not flashed the computer for over 2 months. All I can come up with is that the cold weather did it. If anyone has any ideas let me know.
Old 12-20-2007, 03:14 PM
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Since you are running OLSD, it was likely the weather that did it... One of the nice things I like about using EFILives custom operating systems with semi-open loop speed density tuning - no problems with weather changes...


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