MicroSquirt.com read only forum (Jan.15,2018)

A pic of today's datalog that shows the problem. RPM drops for no reason I can find.

I've been beating my head against a wall for a couple weeks now. I'm hoping someone here can see something I can't.

The Setup
Installed on a Porsche 914 4-cyl.
MicroSquirt v3 running 3.83b firmware.
LS2 COP running wasted spark.
AEM 30-2310 Wideband Inline
Walbro 80psi,255lph pump set at 32psi ...

Finally saw the big bold warning saying that 3.83 must use the beta version of TunerStudio. Everything works with that version. Sorry for having wasted your time.

Setting the cranking RPM does work. Was 350rpm, I changed to 300, powercycled and checked - it said 300 rpm.

I deleted the log file, started TS (checked that it was the newest version) and tried to write the CLT calibration once. Then quit TS.

Looking at the log line by line, the first thing I ...

The sensor changes when you unplug it and IAT and CLT operate while driving (they go up) in a reasonable fashion. They're just not scaled correctly (i.e. my IAT reads 18 today when it's 70+).

Here's a copy of my wiring diagram in case there's a clue in there. Also, I will end up with a spare ...

Same situation on the upgraded then downgraded 3.78 unit. Clt stays the same dispite values input on calibration screen.

I don't get any error messages. When I change the CLT calibration and write to controller, the progress bar moves along the bottom and then the ECU resets. I'm still on 3.83a.

The engine is off when doing this.

I will have my buddy who upgraded to 3.83 had this problem, and went back to 3.78 try ...

I was doing a little testing today to see if I could overcome this issue and one of the things I tried while fiddling around in TunerStudio (2.0.8 ) was to recalibrate my thermistors. Well I put values in the Calibrate Thermistor Tables and wrote the changes, but the readings didn't change on the ...

I reset it in the Tools menu -> Calibrate AFR Table... as well as in the Project Prefs and in Fuel Setup -> EGO control. Just went and tried it again.

Does AFR not read if EGO Control is disabled? (mine is disabled)

Apologies if this is the wrong forum. Wasn't sure where to put this exactly.

I have a MicroSquirt (v3.8 firmware) install on a Mercedes C230 engine that I installed and I noticed that the AFR wasn't working. TunerStudio would sit at 12 with occasional jumps to 17 (nothing in between, ONLY those two ...