24-12-2017, 06:41 PM
There are a huge amount of differences between all versions of the 8v HDis software. The changes are mostly in the pilot start of injection and quantity and the main start of injection and EGR rates and the quantity by air mass (or "Smoke Map") is also changed quite a bit between versions. The later engines are calibrated to pass the Euro3 standard, notably the 3 plug ones (010592), this is why they have the doser valve to force more EGR, they also run nowhere near as much timing at low injection quantities (again, to reduce NOx).
I'm surprised you think that the earlier ones don't hang the revs for as long - for the record, the values which control this are identical between all 306 software revisions. It may be that the clutch switch has failed in the earlier one - the switch does affect how quickly the revs will fall after releasing the pedal.
You can easily change the software around so the earlier ECUs run close to the same values as what would be found on a later 3plug anyway, no need to change out the entire ECU.
I'm surprised you think that the earlier ones don't hang the revs for as long - for the record, the values which control this are identical between all 306 software revisions. It may be that the clutch switch has failed in the earlier one - the switch does affect how quickly the revs will fall after releasing the pedal.
You can easily change the software around so the earlier ECUs run close to the same values as what would be found on a later 3plug anyway, no need to change out the entire ECU.
