speedo innacuracy
speedo innacuracy
Hi hondata,
Went to a drive in the highway and I was doing 260 km/h on the speedo.
In the datalog the car was only at 240km/h.
Today went to make a dyno and they said the car have a brutal speedo inaccuracy of more than 20Km/h.
The car is the FN2 civic and this is MAP based calibration there is in f.manager for the FN2 (with changes on fuel, ign. and cams).
What is the problem?
Thanks
Nuno
Went to a drive in the highway and I was doing 260 km/h on the speedo.
In the datalog the car was only at 240km/h.
Today went to make a dyno and they said the car have a brutal speedo inaccuracy of more than 20Km/h.
The car is the FN2 civic and this is MAP based calibration there is in f.manager for the FN2 (with changes on fuel, ign. and cams).
What is the problem?
Thanks
Nuno
The race calibration in a FN2 will give an incorrect gauge speed due to the final drive. The datalog speed should be accurate. We plan to add a setting to fix this.
If you have an issue then we need to know:
- chassis type (eg FN2)
- calibration type (AFM or race)
- final drive
- gauge speed vs datalog speed vs actual speed
- actual speed determination method
- gear speed was measured in
- tire / wheel size if different from stock
If you have an issue then we need to know:
- chassis type (eg FN2)
- calibration type (AFM or race)
- final drive
- gauge speed vs datalog speed vs actual speed
- actual speed determination method
- gear speed was measured in
- tire / wheel size if different from stock
Hondata
- chassis type: FN2Hondata wrote:The race calibration in a FN2 will give an incorrect gauge speed due to the final drive. The datalog speed should be accurate. We plan to add a setting to fix this.
If you have an issue then we need to know:
- chassis type (eg FN2)
- calibration type (AFM or race)
- final drive
- gauge speed vs datalog speed vs actual speed
- actual speed determination method
- gear speed was measured in
- tire / wheel size if different from stock
- calibration type: race
- final drive: OEM
- gauge speed vs datalog speed: 259km/h vs 240 km/h
- actual speed determination method: on the road
- gear speed was measured in: 6ª
- tire / wheel size if different from stock: no (stock 225-45-18)