dremd
Veteran Member
- Joined
- May 31, 2007
- Location
- South Louisiana
- TDI
- 06 sprinter. 03 jetta wagon premium with 6 speed ALH swap, 14 JSW
Just finished my first tank with the SGII to calibrate it. 46 mpg calculated, driving very easily. And now I am seeing much lower than expected mpg figures at constant speed on level ground.
My question is am I either A) getting crappy mileage at speed or B) is the SGII not all that accurate on the ALH or C) do I just need to run another tank through to get it calibrated. or D) A combination of the above
I am getting the following #'s
80 mph 27 mpg
75 mph 30 mpg
70 mph 33.5-34.5
65 mph 36 mpg
60 mph 39 mpg
and 55 (no return run, just on side roads) 43 mpg
My semi-scientific test consisted of a 5 mile stretch of (Seemingly very flat) interstate, 1 mile to get up to speed, start test @80 mph Cruise set for .8 miles watch the SGII MPG figures, decel to 75 for mile 2, decel to 70 for mile 3, decel to 65 for mile 4, and decel to 60 for mile 5. I reversed the procedure for the return run, so each speed took place on the equivalent piece of pavement on the return trip, all figures were essentially the same (either direction).
All figures are kind of un-scientifically scientifically averaged, but the margin of error is > 2 mpg
All speeds indicated; to get corrected speeds subtract 3~4 mph and you will be very close; in this speed range; in my car.
Clifs Got first full tank on SGII 46 mpg calculated, but was hyper miling extensively, now SGII is indicating poor MPG's that don't change very much with speed.
My question is am I either A) getting crappy mileage at speed or B) is the SGII not all that accurate on the ALH or C) do I just need to run another tank through to get it calibrated. or D) A combination of the above
I am getting the following #'s
80 mph 27 mpg
75 mph 30 mpg
70 mph 33.5-34.5
65 mph 36 mpg
60 mph 39 mpg
and 55 (no return run, just on side roads) 43 mpg
My semi-scientific test consisted of a 5 mile stretch of (Seemingly very flat) interstate, 1 mile to get up to speed, start test @80 mph Cruise set for .8 miles watch the SGII MPG figures, decel to 75 for mile 2, decel to 70 for mile 3, decel to 65 for mile 4, and decel to 60 for mile 5. I reversed the procedure for the return run, so each speed took place on the equivalent piece of pavement on the return trip, all figures were essentially the same (either direction).
All figures are kind of un-scientifically scientifically averaged, but the margin of error is > 2 mpg
All speeds indicated; to get corrected speeds subtract 3~4 mph and you will be very close; in this speed range; in my car.
Clifs Got first full tank on SGII 46 mpg calculated, but was hyper miling extensively, now SGII is indicating poor MPG's that don't change very much with speed.