what went wrong?

[ohcbird]

Are you sure that you are 100% mechanically correct? Have you:

1. verified your timing order/plug wires
2. set base timing
3. verified your plug gaps & plug integrity
4. verified fuel pressure during all phases
5. Etc...

Given your 10% correction limit, did you see (or log) which way your WB was pushing? I'd do some solid fuel calculations before trying autotune. I agree w/Jody; I'm NOT a big fan of any autotune feature, as most of the time you'll get a real fat (rich) map. I definitiely wouldn't use it on my twin-turbo'd motor, as tuning for a specific A/FR doesn't do anything for driveability.