Measuring "pedal lag" in the Model 3?

[dspwhite]

I want to precisely measure the time between pressing the acceleration pedal and when the car starts to move even a millimetre. So far, from tests I've done, I'm measuring around 120 milliseconds, but I want another way to back this up to make it a bit more conclusive.

I don't think the Model 3 has an OBD port, but is there another way I can achieve this? If it was an app of sorts, I'd need a log for the following:

1: Time in milliseconds

2: Pedal position

3: Distance travelled (millimetre or centimetre accuracy needed), or mph/kph (tenths of a mph or kph needed really)

Can this data be somehow obtained, perhaps via one of the numerous Tesla apps out there?

 

[Knightshade]

No OBD port, but there's several CANBUS->OBD2 adapters out there for Model 3

diagnostic adapter cable - Tesla M3 (>01/2019) bundle version - EMDS

 

[dspwhite]

No OBD port, but there's several CANBUS->OBD2 adapters out there for Model 3

diagnostic adapter cable - Tesla M3 (>01/2019) bundle version - EMDS

Thanks. Using that, can I get at the stats I need to complete this project?

 

[Knightshade]

...probably?

Seems like you want throttle position and either distance moved or speed?

RaceChrono Pro v6.1 with Tesla Model 3

throttle position is a known canbus value to reference with a CAN/OBD2 device.



Extremely accurate performance data from the CAN bus

Speed data is known and accurate to at least 0.1 mph (that's on a model S with an older computer too)