It does sound like the controller has a failure. It's been quite a while since I messed with a gen 7 or 6 so I can't remember if the 7 is potted. I would take it apart and look for some bad components. The wideband going out at the same time as the failure starts is troubling too. I'll contact a tuner bud of mine that has tons of experience with the Accel stuff and post back when I can.
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