OK if you burn the correct easytherm values in your firmware

Paul, you had looked at my files, I thought you said that it seemed I was already running the GM IAT easytherm values.. Or am i running some crazy numbers that don't correspond to anything? :giggle:

While they may be the correct curve for a GM sensor you still have to have the correct bias resistor value. I'll have to look at it again and at the email from Scott concerning your build. Or he could just post it here.....

Hey paul, sorry to keep harassing you but I'd really be grateful if u could take a look at my setup. The iat's installed and hte car runs OK, but based on all your comments earlier, i am not sure it's configured corrrectly.

My CLT still hovers at around 160, often below.. U guys had said that the stock thermostat is set for 190.. i read around and saw that hte '160 thermostat' was a popular tweak 10 years back, so maybe the prev. owner had done this?

1. i'm drunk
2. did scott built your ms?(answer = potentially worse than me being drunk)[please dont ban me scott[]
3. paralllel or standalone?
4. is iat hooked up directly to ms or through afm harness

I'm working :facepalm:

Yes.

parallel

Through AFM harness.

Thanks for the reply!

ctxspy, did you copy these (see below) three .inc files into your project folder's mtcfg folder?

Index of /MS/msq/Therm Files/16L_piggy

I just put them into the mtcfg folder now. I didnt have the files in there until i just put them in, thuogh it looks like i had them in the 'src' folder.

Do i have to do something with this? burn it to the MS? OK so i did some reading.. i'm still not sure if i have to burn a new firmware or what :(.. From what i read, you need to send these values to the MS, but the actual .inc files are for megatune itself.

If the MS was OK but MT was misconfigured, then i would still be seeing correct AFRs regardless of temp right?, only the temps that show up on megatune would be off... In short, i think maybe i need to burn htese sensor settings to the MS.

Scott, do you have a copy of the firmware i need to load to the MS? Also, i keep readnig about the 'bias resistor value'. You use the DIY default? (2490 ohms?)

-Tomaj

that's it. now your laptop should be seeing what the MS is actually seeing.

unless you happened to reflash it with different values.

OK i'll give it a shot on the way home today, but i'm still confused because of my car's symptoms..

I may be crazy but i would swear that the car runs leaner when it's hot, significantly so... Wouldn't that be aan effect of the air / temp factors being set for a different sensor? Is there any way to verify what is currently on the MS, or i just would have to re-flalsh to be certain?

-Tomaj

the .s19 file in here should match:

Index of /MS/msq/Therm Files/16L_piggy/hr_10g


if you never reflashed it, I'm positive that's what's loaded.


take a log of what's happening, then we can see if enrichment are doing it, if the temps are correct and all that jazz.

hey, thanks for all the help... I never re-flashed it so i'll take ur word for it that it's the rigght firmware.

i ran megatune and logged on the way home, saw temps way higher than previously reported... I was now at 192 to 202 or so for CLT temps, and my IAT was up too, starting from 90 going up to 120 degrees F by the end of my 15 minute drive.

Please see attached datalog, let me know if u see anything right or wrong.

-Tomaj

depending on where your AIT is, that sounds about right, mine is outside of the engine bay and i was logging 97*F on the way home today. If N/A then sounds spot on, it's always above 100*F.

192-202*F coolant is perfect. if i built your MS with fan control (which i believe i did) i have the fan come on at 200 and off at 192, so...

hey,

I'm turbo with a begi-s. The IAT is in the engine bay, past the turbo but on the driver's side of the radiator.. I don't have an intercooler, but if i did,t it would be "pre" intercooler in its present position.

I did it this way because i read that the radiator can heatsoak the IAT so this was the best middle spot away from the turbo and the rad.

so does it look like the IATs are correct given my setup? Also, can you let me know if my temp based corrections seem correct?

-tomaj