Downshift Gear Slip Adjustment
Posted: 01 May 2025, 19:01
Hello,
I did the 8hp swap on a BMW E39 turbo which uses MS41(throttle cable) and Map sensor(internal calc). The set up works great but need some fine tuning.
What should I adjust for these issues below?
#1 - There is a slight kick from 3-2 and a bigger kick from 2-1 when coming to a stop. Is there a setting to let it slip longer on there downshifts?
#2 - When cold 1-2 there is a harsh fast shift, when warm is less harsh but would like to slow down the upshift.
Also on map knob map3 is manual and map4,5,6 is the same as but speeds up up/downshifts and gear change(paddle/shifter) engagement speed. What are the tables that affect this?
Sorry for the noob questions. I adjusted the calc/torque table for my torque curve/boost and been running fine with only these issues above.
Thank you.
I did the 8hp swap on a BMW E39 turbo which uses MS41(throttle cable) and Map sensor(internal calc). The set up works great but need some fine tuning.
What should I adjust for these issues below?
#1 - There is a slight kick from 3-2 and a bigger kick from 2-1 when coming to a stop. Is there a setting to let it slip longer on there downshifts?
#2 - When cold 1-2 there is a harsh fast shift, when warm is less harsh but would like to slow down the upshift.
Also on map knob map3 is manual and map4,5,6 is the same as but speeds up up/downshifts and gear change(paddle/shifter) engagement speed. What are the tables that affect this?
Sorry for the noob questions. I adjusted the calc/torque table for my torque curve/boost and been running fine with only these issues above.
Thank you.