I just finished my 1st and last tank using 80% pulse and glide. Not only did I not see the gains I had hoped it should result in I also verified the SG is way off in the gal of fuel used and mpg.
I have kept decent records of SG vss pump and if you look at the last fill you'll see the 17% error I just recorded.
SG said I used 9.31 gal with 526 miles
Actual 11.325 for 529miles
I was also pushing for a 600 mile tank but after running 81 miles after the E light came on (another record for me) I gave up and filled.
11.325 is way past the most I have used (look at the chart) and well past the 10.7 gal the Fit spec. I have know idea about this.