[harkes]

Hi

My car has this weird little issue where it is running open-loop (STFT stay at 0) some seconds after taking off from idle at low/medium throttle.

Can someone help me with a log from their car for comparison?

Here a log of what is happening:
https://datazap.me/u/harkes/fabian-v...3&mark=586-381

[thejeremyman9]

I think this is normal. In most (if not all) logs, i recall seeing STFTs go to zero (MHD, would be 1 in BM3) right when the throttle input is changed 'abruptly'. I think the DME just doesnt try to do closed loop during this transient period (such as right at tip in or right when you go WOT to do a pull).

For example look at log here: https://datazap.me/u/thejeremyman9/3...0&data=4-21-23

[harkes]

Originally Posted by thejeremyman9

I think this is normal. In most (if not all) logs, i recall seeing STFTs go to zero (MHD, would be 1 in BM3) right when the throttle input is changed 'abruptly'. I think the DME just doesnt try to do closed loop during this transient period (such as right at tip in or right when you go WOT to do a pull).

For example look at log here: https://datazap.me/u/thejeremyman9/3...0&data=4-21-23

Thanks!

[harkes]

Did another small test. Very consistent delay... Oh well

https://datazap.me/u/harkes/fabian-v...data=0-2-17-19

[thejeremyman9]

Originally Posted by harkes

Did another small test. Very consistent delay... Oh well

https://datazap.me/u/harkes/fabian-v...data=0-2-17-19

Just means your fueling needs to be on point for that brief period to keep your AFRs in check