4L80 Tuning?
06-19-2006, 04:38 PM
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4L80 Tuning? Anyone got any good modified line pressure tables/etc for the 4L80? Do i use the same values as the 4L60? This is a truck so I also need to keep it able to handle towing.. just want firmer shifts/etc
06-19-2006, 06:25 PM
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06-19-2006, 10:00 PM
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I have some modifications that I made to my 2500HD with a 4L80E. Most of the changes were to the "normal" trans program and some to the "performance/tow" program. Do you just want the line pressure tables?
