Hondata

It looks like there are a number of bad solder joints for the 14 pin rows for the s300, as the pins are not visible and the through hole vias may be damaged. You may need to use a different ECU.

What do you mean by a board?

The ECU cannot make the ignition go negative.

Post the calibration used as well as a datalog of when this is happening.

Post pictures of the soldering done on the bottom of the ECU for the s300.

Is J12 cut on the ECU?

If you have the wideband hooked up so it is datalogged, then it is running VERY rich, or the sensor is faulty as it is reading in the 7's.

How exactly do you have this wired?

The Mini replaced the larger version and they do the same thing.

Have you uploaded a calibration to the ECU and does it datalog?

Post pictures of the soldering on the bottom of the ECU that was done for the s300.

The CARB version is for vehicles that will be driven on public roads and has limited tunability so that it can maintain emissions legality. The race version is only for vehicles which will not be driven on public roads and is fully tunable. The ECU must be jailbroken and can be done easily yourself:...

Post the calibration and datalog showing the issue.

Do you have the "all" button selected at the top of the table?

What vehicle are you referring to?