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98+ is also supported by EFILive.
Proceedure is the same but a couple pins are different on your harness.Is a 97 the same conversion procedure to 0411 as 98+?
I run my L31 on a P59 from a 2004 DBC 6.0L. My base file is from a 2005 GMT800 L31.Be advised, not everything is defined or defined correctly with the black boxes. Most who get serious with tuning swap in 0411. If you do, you open the door to open source tuning tools that are a lot cheaper, and people are currently working with them. Check out Universal Patcher.
I have Hp on my 98