I'm generating a catalog of performance data from various TCU tunes for the DQ250 transmission.
The data gives a method of objectively comparing control logic implemented by different vendors.
If you are using a TCU tune that you'd like added let me know and I'll guide you through the data recording process.
Here's an example result:
This shows that for light pedal input (5-10%) the minimum engine speed you are likely to see the shift from 2nd to 3rd take place at is 2250 rpm. For moderate pedal input (35-40%), something that will have the GTI accelerating a good bit more rapidly than typical traffic, the TCU logic holds off shifting from 2nd to 3rd until roughly 2600 rpm is reached. This allows the engine to rev slightly further along the power band in response to the driver request for more rapid acceleration.
The vertical position of the trend line and the slope communicate a significant amount of information about how the vehicle will respond to driver pedal input.
The data gives a method of objectively comparing control logic implemented by different vendors.
If you are using a TCU tune that you'd like added let me know and I'll guide you through the data recording process.
Here's an example result:
This shows that for light pedal input (5-10%) the minimum engine speed you are likely to see the shift from 2nd to 3rd take place at is 2250 rpm. For moderate pedal input (35-40%), something that will have the GTI accelerating a good bit more rapidly than typical traffic, the TCU logic holds off shifting from 2nd to 3rd until roughly 2600 rpm is reached. This allows the engine to rev slightly further along the power band in response to the driver request for more rapid acceleration.
The vertical position of the trend line and the slope communicate a significant amount of information about how the vehicle will respond to driver pedal input.
