What the table controls
A throttle blip briefly opens the electronic throttle during a shift so engine speed rises to meet the next gear, the same idea as heel-and-toe on a downshift. This table only appears once Throttle Blip is enabled in the flat shift settings.
Each cell is a time in milliseconds. The blip opens the throttle by the percentage set in the Throttle Blip Amount table and holds it for the time in this table. So a value of 250 means a 250 ms blip. The blip can end sooner if one of the exit conditions is met first. Duration is the maximum, not a guarantee.
The table can be mapped in up to three dimensions, so you can use different durations for different situations. Gear and RPM are the natural choices, since a downshift from high RPM in a high gear needs a different blip than one at low speed.
Tuning it
- Tune amount and duration together. A bigger blip needs less time, and a small one needs longer.
- Log engine RPM against the RPM needed for the target gear. Too short and the clutch engages with RPM still low, so the car lurches. Too long and the engine overshoots.
- Start short and conservative, then build up until shifts are smooth.
If shifts are close but not quite right, throttle blip gear tolerance and conditional trigger are worth checking next.
