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Old 06-06-2016, 10:38 PM   #21
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Thanks sixshooter, what you suggested worked well.

If i rev the car up a bit (3-4k rpm) at idle and i get a bit of a backfire after i let off throttle, is that too much accel enrich? Afr's first go really rich to 10ish then swing lean.

What are common things that cause lean restart, i know about iat heat soak but mine is now in the IC end tank. Stays very cool there. Even having played with the coolant related air density so correction stays at 100%. I still lean out after car sits for 5-10 mins. Drive it a bit and it returns to normal.

Last edited by cruisin; 06-06-2016 at 10:54 PM.
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Old 06-11-2016, 09:42 AM   #22
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What can i do about my map signal being very wavy at times in higher rpm and map, goes up and down by 10 kpa at times. I tee'd off at FPR, and i also tee'd into the map line going to ecu so it can give my boost gauge its signal as well.

I think most of my other issues are fixed with tune, car is running pretty good.
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Old 06-11-2016, 10:12 AM   #23
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A few things can cause that. An obstruction in the map sensor tube, maybe it getting kinked? But 10 kpa isn't much. Are you absolutely not moving your foot on the throttle?
Are you even talking about map, or ergo control? Map will show on your fuel map, ergo will be found in the enrichment tab.
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Old 06-11-2016, 10:28 AM   #24
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Not kinked, i thought it could be related to throttle movement. It is map, when map goes wavy so does the afr. As i accelerate map line in log is pretty straight, little bumps from 1-2kpa swings, under higher rpm and map sometimes its like that or 5-10 kpa swings.
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Old 06-11-2016, 10:30 AM   #25
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Screen shot of your vehicle table.
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Old 06-11-2016, 11:25 AM   #26
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Screenshot from a log, that is my current fuel table.
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Old 06-11-2016, 11:28 AM   #27
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Your resolution is terrible, IMO. You have monster jumps in your kpa axis. Get rid of the 18 and 29 kpa. Use those extra rows for boost, or areas you drive most.

Never seen an ms1 VE table. Ew.
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Old 06-11-2016, 12:10 PM   #28
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See anything related to the wavy map signal? You can see afr, pw and dc go wavy as well.

Since i am only running 8 psi, how about i just make my max kpa say 185 which is good for 12psi? That table is what comes w/ basemap.
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Old 06-11-2016, 01:02 PM   #29
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Yeah, the massive gaps between reference points. 100 to 125 then 159. Poopoo resolution where you need it.

What is TP (throttle position? ) and why is it swinging like that?
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Old 06-11-2016, 01:21 PM   #30
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Ya TP is throttle position. I just have the stock tps, so that number only changes from 49 to 48. 49 when throttle is not moving then 48 when it does. You can see though when TP line is flat map line is still wavy.

Ill see what i do about resolution, i did read about it before and ppl said it was fine like that. Goes up by 28 until 184 then by 18 until 230.
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Old 06-26-2016, 12:07 AM   #31
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Hey, got a few more questions.

1) I have been working on tuning heat soak, from what i read you want to have gammae 100% across all temps. But i need it to be higher in high temps in order to negate heat soak. Today it was around 30 celsius and each time i turned car off for a bit and restarted my iats were on average 38 celsius, so heat soaked. I had to get gammae up to around 108-110% so afr's stayed normal. Is this ok or is something wrong with my tune?

2) I have my over run cut set up so it is active above 2000rpm and kpa below 15, my kpa when i am off throttle is always 12. Also set it for after 2 seconds. Issue i am having is that when rpm gets below 2000 it stays in over run cut and if i let rpm go much lower car starts to shake and jerk. Should it not go back to normal afr below 2000?

3) When looking at a data log and i see red lines in the progress bar at bottom is that misfires? Got a log with 4 of them, all happen while car is idling. couple of them i can see afr go full lean or close to it the others it doe not change. Also noticed at around the same time during a couple of these misfires my coolant temp reading goes wacko. First time coolant went from 101 celsius back down to 70 and my ASE and WarmY went active, second time coolant went from 101 to 90.

Sorry for the essay, any help is appreciated.
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Old 06-26-2016, 07:24 AM   #32
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Sounds like you have sensor signal issues.

Do yourself a huge favor. Sell the ms 1 and buy an ms3.
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Old 06-26-2016, 11:03 PM   #33
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Can you elaborate more on the sensor signal issue?

Just want get the car running as best as i can with what i have. Maybe upgrade ecu later.

Any idea for the over run cut not going off below 2000rpm? Does the delay time only affect how long it takes to start or does it also effect how long it would take it to stop?

Also what effect does the target table have on the fuel map, if for example i want to have an 11.8 afr at 150kpa and 5000rpm but in my fuel table its calculated to supply a 12.2 worth of fuel will the target table somehow make it add more fuel. Or is this only while in closed loop. This is just for normal driving, not during tuning.
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Old 06-30-2016, 12:39 AM   #34
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I have uploaded my current tune file and a data log, can someone check them and tell me what you think about my AFR's to what they are during driving to my targets.

Also i am still having issues with my fueling staying full lean below my min rpm for over run cut, you can see in the log PW increases but AFR's dont change.Even with over run cut off it does the same thing.

How does my coolant related air density look? I have had to jack up the corrections quite a bit to maintain my AFR's on hot restarts. Im also having trouble maintaining a smooth idle often no matter how i play with the corrections. Also today i at one point started the car at 24 celsius iat and it was leaning out a bit, but that was right around what the ambient temp was. Drove a little and stop and AFR's went back to normal but IAT was still 24. I also made correction in my coolant related air density up to 30 celsius but it still leaned out.

Thanks in advance!
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File Type: msl run.msl (451.2 KB, 20 views)
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Old 06-30-2016, 07:06 PM   #35
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I'm using MS1 on a 96, so a few things are different. You might try a few of these settings to see if they are more compatible than what you are using.
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Old 07-01-2016, 12:14 AM   #36
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My idle control is ok, 1.6 has different min dc and other settings.

No matter what i set the over run cut values to it still stays full lean under the rpm limit. Even with over run off, it still goes full lean when off throttle or sometimes i have had it where it fluctuates between what the afr should be in the ve table and full lean. My idle PW is 1.7-1.8, in my logs i can see when i get below 2000 rpm for over run the PW increases from 0 to 1.4 so injectors open but not enough?

For coolant related air density table, my values were similar to yours with base map. But i set all correction numbers to 100% and tuned VE and now i am just adding correction during different temps to maintain my afr's and battle heat soak. Is that ok?
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Old 07-01-2016, 11:41 PM   #37
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Been playing with some settings and it seems that my and TPS lower then value is what is affecting my over run cut. With the base map it came set at 150, with this number it goes into over run as it should and stays there until idle. I had it set to 100 and it would not over run cut, just went by the afr in ve table. At 125 it goes into over run cut but it goes back and forth between full lean and afr in ve table for bottom row.

Can i even tune this value, since i am still running the stock 90-93 tps(not variable). Also tried disconnecting the tps which did not help.

Sixshooter i noticed you have 40 for your and tps lower than, are you running a vtps?
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Old 07-06-2016, 01:02 AM   #38
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For my over run fuel cut i have it set to rpm above 2000rpm and kpa below 20, issue i am having is my afr stays full lean below 2000rpm. In my logs my PW activates, goes from 0-1.4 but my afr wont come back off full lean. What is causing this?

Also when i autotuned i had accel enrich values to 0, ve table seemed to get set up well. I also made some adjustments after with logs etc. Issue i have is my accel enrich pw adder values need to be very low other wise my afrs go too rich when ae activates. When driving car feels ok and i dont see it lean spike much at all, but coming off me bottom ve table row from over run cut and when downshifting engine gets very shakey. I had over run off so it just went by the afr down at 12 kpa and when i get back on throttle i can see afr go from 14.5ish to 18, so lean spike. Is this related to AE? What did i do wrong?
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Old 07-08-2016, 01:09 PM   #39
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Autotune does not manipulate cells when AE is actively adding fuel. But if you are trying to autotune with AE off then you will end up with funky values because you will go lean whenever you push the throttle more. IOW, leave AE active while autotuning. It knows what it's doing.
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Old 07-08-2016, 08:14 PM   #40
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Yeah every time it lean spikes it will want to add fuel to the table. I noticed in many spots where i had random higher numbers so i smoothed it out by hand then used logs to clean things up. Issue is i need higher pw adder in AE right now to prevent lean spikes but if i go any higher AFR's go super rich when it activates. Without AE up top in boost ill hit 11.8-12, and even with my small AE numbers right now ill go richer then that when it activates. Can go as rich as low 11 with what i have set up now and with higher pw adder values AFR goes to 10.

Another thing thats weird is when i sit at idle and i blip the throttle, i need a good throttle input to activate AE. But when i am coming off the bottom row of my VE and i get on the throttle the slightest input will activate AE and i get big lean spikes from 14.5 afr to 18. Up top it spikes lean by maybe 1 afr.

Also for over run it only returns the afr below my rpm limit in some gears, mostly in 4th. In second and third the PW increases but afr stays full lean and if it gets low enough engine bucks and shakes. Not sure whats up there.
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