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Struggling with DBW PID control (Syvecs)

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This is my first time tuning a DBW setup and also using a Syvecs ECU.

I am a civic FD2 electronic throttle body to a toyota 2ZZ engine and have been messing with the PID control for two days straight and still could not get any satisfactory result with the PID control. Every time I try to correct a problem, the resulting changes would cause another problem to pop up.

The logs below are the best I can do for now but results seem to be inconsistent. Sometimes the throttle position would overshoot the target and sometimes it would fall short. It seems to be worse when I am testing small movements that will be critical to idle.

Can someone point me in the right direction on what I am doing wrong here and what settings should I try changing to improve the control? Thank you.

Since the ECU calibrations and log files cannot be uploaded on this forum, I have attached them here:

Log - Large movement https://drive.google.com/file/d/1dOzUkdeNx-zFox5LsJ6Z8OM4w_CYsf6a/view?usp=sharing

Log - Small movement https://drive.google.com/file/d/11VCujW_Tj6yWnT2rBzzXp_NuFaVJNCno/view?usp=sharing

ECU calibration map - https://drive.google.com/file/d/1iX93A3TWdoGA4Hle0E-Mc741H7Pk7caa/view?usp=sharing

Please note I am only setting up the DBW right now and the rest of the ECU calibration is not tuned.

Attached Files

Hello Jerry sorry im not familiar with this set up i hope some one here is able to help

Regards Ross

No worries Ross. Requested for help on the Syvecs forum and they have provided the DBW base setting for the FD2 as reference.


The M+ and M- wiring are swapped for the base map though so the numbers are the other way round.

Gonna give it a try and fine tune everything over the weekend.

why don't you swap your wires -- particularly if the other way is the common way.

We usually reply within 12hrs (often sooner)

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