Progress Thread finally tuning (and more)

Shouldn’t the EEC be able to adjust the pulse width for variables? I mean, if it’s tuned properly to begin with including leaving a bit of room on each end of the fuel table, the computer should be able to handle adjusting to some worthy degree. Does that make sense?

I’ve got a wire connected to my PLX wideband which I will use to data log through pin 27 in the EEC and into BE. Pin 27 is the EGR circuit as some of you already know. I won’t be deleting the EGR system but rather retaining it in the end. Instead I’ll be borrowing the EGR circuit. The data logging wire runs through the firewall and over to close proximity to harness connection for the EGR. I’ll data log for the tuning process then switch back to functional EGR afterwards. I’ll simply turn off EGR in the tune, unplug the harness and tap the pin 27 wire at the EGR harness in the engine compartment. I made a single push pin type connection pigtail specifically for the purpose of temporarily connecting to the harness for data logging. It’s super simple to revert back to functional EGR after tuning. Absolutely zero permanent modification of the factory wiring.

AeroCoupe said:

If it was me I would put the wide band wire and the EGR wire on a relay so I could switch back and forth without having to pull the harness in the further. This would mean cutting the EGR wire but that’s just how I would do it.

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I thought about that but in different way. My idea was a multi position toggle rather than a relay. My conclusion though was to just manually switch it back. Once I’m initially tuned I doubt I’ll need to change much moving forward. I could be wrong though