So here in Arizona they visually inspect for the EGR, so if I want to drive it on the road I need to keep it.
I want to go with a standalone ECU (favoring Speeduino), but they don't control the EGR. I did see some talk about it in the forums, they suggest at a certain RPM and TPS reading, to open the EGR.
But it looks like the EECIV works differently. It simply shuts off the EGR at full throttle for a bit more power, and otherwise the vacuum is what opens and operates the EGR.
That would be fortuitous, as that would be very easy to program into the speeduino. And I also hope that would be easily reflected in the tune as well, just anticipating the EGR to be open under most operating conditions.
Does anyone here know for sure if the vacuum operates the EGR, only to be shut off at WOT by the ECU?