Just because someone claimed to build it doesn't mean it was built right. I'm not saying it was necessarily built wrong, but there are a lot of folks who claim to build 4L60Es that end up being trash. It's not a complicated transmission, but you have to actually care about your work and actually know what you're doing or it's very easy to overlook a component (or cheap out) and end up with a junk transmission not too long afterwards. Garbage in, garbage out.
Your table looks bone stock with zero modifications. I see nothing wrong with it. It doesn't appear the tuner touched it at all.
Nope. I have a stock '94 Corvette with a 4L60E, and this is my table:
Attachment 16994
Not saying you can't do better by messing with those values, but claiming they're wrong is incorrect. They're factory GM values.
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