weird datalogging readings with Ecucontrol

taiajam

#1 ◈ 2026-02-18

Hi,

I just got ecucontrol working on TE 3.2.2, but now there is another problem;

I can connect and start logging, but the reaings are not correct.
I tested it at idle and just revving the engine a little.

sometimes it shows im going 100 km/h and the baro is at 11+ psi etc...
whats wrong??

I hooked up only 3 wires to the CN3 since im using a USB DKU5 cable.
White to GND #1
Green and Red to TX#2/4, RX#4/2
when connect the black wire to +5v #3 and Click "start logging" TE3.2.2 crashes and quits.

The Acid Beaver

#2 ◈ 2026-02-18

Re: weird datalogging readings with Ecucontrol

Flip the cable around?

taiajam

#3 ◈ 2026-02-18

Re: weird datalogging readings with Ecucontrol

I Fixed the problem by opening the usbplug. i could see tx rx gnd on the pcb.
flipped the wires and it works.

ECUcontrol keeps starting in US instead of Metric.. is it a known bug? also my custom colors sometimes get back to standard. this makes me believe there is also an offset in the readings i get from my ecu since my boostgauge displays more vacuum then ecucontrol.

The Acid Beaver

#4 ◈ 2026-02-18

Re: weird datalogging readings with Ecucontrol

Some settings don't save for me, also, but for me it is ONLY the "warning" settings. Everything else saves just fine.

Honestly, ECU control is showing you what the ECU is reading. As long as your map sensor is set to the correct type, then the data is accurate as far as the ECU is concerned. Sometimes there is an offset depending on the PA sensor reading, but, that is only my speculation. This shouldn't be too much of an issue for tuning.