On my last two Honda's I ran Neptune with a P28 ecu. I used a modified
PLX 300 wideband controller with a NGK O2 sensor. You can run a AFX controller also with Neptune that is NGK wide-band user friendly.
With Neptune you can turn the check engine light into a shift light also.
The EGR could be controlled by the Neptune also.
There are a lot of input/output user defined applications with Neptune also.
The downside is a PO7 ecu won't work with Neptune.
I never ran my Honda's in closed loop. I found you can run much cleaner with open loop verse closed loop at very-lean burn. I don't even understand why Import Tuner choose to run in closed loop??? A good tuned map with low extrapolated outer cell values is always a better way to go. IMO
The next best thing IMO would be a Motech system. But now were talking $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
