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1G ECMLink V3 SD Idle Help

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Joeschmo101

Probationary Member
16
2
Jul 16, 2015
Edmonton, AB, Canada
Hey there, i was wondering if you guys could take a look at my idle log and answer a few questions, as I've just started tuning. Mods are up to date in my profile.
1. Does anything stand out wrong about my idle? Is the simulated 02 sensor supposed to have a more uniform oscillation?
2. Is there a way to apply a function/ change a setting to my MAP sensor readout to only give PSI? My boost gauge is broken and Inch Mercury is quite useless to me.
3. How exactly do you get your car to run just as well in open as close loop? In Closed loop i was hitting 14.7:1, in open i was only at 12:1. Do i simply need to fine tune my VE table to lean it out, or would that also effect Closed Loop?
4. Can i raise my idle to 1000/1050 to give a smoother idle or is that high of an idle bad for a cold car?
5. If i keep an eye on knock and afr's, could i lock my car in open loop (I know it takes more fuel)
for good? That way i dont have to mess with when it switches over open to closed, STFT, LTFT, etc.
6. Why did mitsubushi design the ecu to have a closed loop and open loop? Why not simply have closed loop, as the ecu is always striving to hit a desired AFR, especially at WOT. Seems like a safer alternative to openloop.
7. Why is my AFREST so far off from my actual WB?

Thanks guys
 

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1) Wideband simulation switchpoint appears to be incorrect. ECMLink lists the LC-1/LC-2 wideband at 2.44 and you have 2.24. Otherwise, it looks fine.

2) Your MAP is already reading in psi. Don't worry about the mercury component. However, if you ever do decide to change logged values, right click on the log screen and click "unit preferences".

3) Closed loop, I believe will almost always be looking to hit 14.7 for fuel economy reasons. Open loop is more of a WOT function that's looking to hit the ECU's AFR Target (like afre est) that is in your DA table min/max octane. You get them running correctly by tuning or calibrating all the sensors and readings on the car to be as accurate as possible. Right now, your VE table is jacked and needs someone more qualified than I to help you with it.

4) 1000 to 1050 seems a little high, but I don't really know what your setup is. You have two profiles underneath. To really prefect your idle, go through this entire checklist: https://www.sixsigmatuning.com/pages/dsm-idle-control

5) Yes, but don't worry about that right now

6) Answered this one above

7) You match your afrest to actual wideband by either changing your global fuel or changing your VE table. Look up some videos on WOT tuning for ECMLink and it will make sense.

Finally, for now you need to reduce your deadtime because your fuel trims are rich. Reduce the deadtime them up to top of screen, hit ECU, then reset fuel trims and repeat until STFT and CombinedFT are as close to zero as possible.
 
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