7747 $42 ECU
I enabled Highway mode and could see in the data log where the engine went open loop. I have read this shows the engine is in highway mode. The first run shows sporadic highway mode. Looking at the scalars there is one named "HiWay Max MAP". The value is 74.92 kPa. I am seeing about 77 to 85 kPa at 55 to 60 MPH. I believe that means the engine drops out of highway mode when the MAP is above 74.92 kPa. Since I am quite often above that value I decided to raise it to 90.05.
I also changed the "HiWay - MPH Enable" from 55 to 50.
I ran a test today and the log shows the engine never went into highway mode. What am I missing? The above values should allow longer stints in lean cruise, shouldn't it?
Steve
Bookmarks