Got the Trimalyzer program working well, however I need to do some editing to the tables to get them sized and ranged appropriately. I am tempted to try and get it to tune based on the wideband sensor, but for now closed-loop tuning is working OK. Unfortunately, after a long highway cruise, when returning to idle the engine idles very lean, but only develops a minor misfire when this happens. Almost as though it was staying in highway mode after returning to (the absurdly high) idle speed.

On that note...

Idle tuning has been difficult and unruly from the start. I think there are some problems with the throttle body size and possibly my idle control valve, that I'll have to work out both in the tune, and on the engine (in the case of the valve, it's possible it's crap, as I pulled it from an 01 Cadillac four years ago...)