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ddillenger
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« Reply #285 on: March 28, 2015, 03:59:44 PM »
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Can you bump LDRXN a bit more? Maybe something like:
109.99 120.00 132.75 145.81 152.46 176.93 176.91 176.91 174.40 171.89 168.38 162.87 153.94 146.91 142.43 131.93
I think this will hit our target boost.
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
Email/Google chat:
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FlyboyS4
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« Reply #286 on: March 28, 2015, 06:29:18 PM »
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Can you bump LDRXN a bit more? Maybe something like:
109.99 120.00 132.75 145.81 152.46 176.93 176.91 176.91 174.40 171.89 168.38 162.87 153.94 146.91 142.43 131.93
I think this will hit our target boost.
Done. Results are:  I added this log to the folder shown above. It's the 3-28-2015 csv. |
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« Last Edit: March 28, 2015, 07:40:15 PM by FlyboyS4 »
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nyet
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« Reply #287 on: March 30, 2015, 05:36:41 PM »
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Time to start logging PID variables.
Looks like not enough i max.
Please review the s4wiki and how the PID functions.
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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ddillenger
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« Reply #288 on: March 30, 2015, 06:01:27 PM »
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Time to start logging PID variables.
Looks like not enough i max.
Please review the s4wiki and how the PID functions.
What Nye is trying to say is that we have increased the amount of boost that's being requested, but not told the ecu what it's going to take to achieve the new goal. The next step is increasing the values in DIMX to reflect what it'll take to hit the boost we want. |
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
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SB_GLI
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« Reply #289 on: March 30, 2015, 06:16:46 PM »
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What Nye is trying to say is that we have increased the amount of boost that's being requested, but not told the ecu what it's going to take to achieve the new goal. The next step is increasing the values in DIMX to reflect what it'll take to hit the boost we want.
I might be late to the party, but the last log shows boost actual following boost desired quite closely. DIMX and the other PID tables are fine how it is. There's a load limiter that's being hit. |
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FlyboyS4
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« Reply #290 on: March 30, 2015, 06:51:40 PM »
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Here are the changes made to KFTARX and KFMIOP. Left is the delta from a stock tune for the values that were changed, and the right are the resultant values being used.  And this is the boost data from the last log, which contained the modification to LDRXN that Daz mentioned making.  |
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« Last Edit: March 30, 2015, 06:53:27 PM by FlyboyS4 »
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SB_GLI
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« Reply #291 on: March 31, 2015, 07:24:59 AM »
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Here are the changes made to KFTARX and KFMIOP. Left is the delta from a stock tune for the values that were changed, and the right are the resultant values being used.
And this is the boost data from the last log, which contained the modification to LDRXN that Daz mentioned making.
Forgive me, I was looking at the wrong lines.. Yes... something needs to be tweaked in the PID tables to make your actual line up with desired. What does your WG duty cycle variables look like in the log? I usually log ldtvm (WastegateDutyCycle) and ldtvr_w (WastegateDutyCycleBeforeLin) to determine if I should change something in DRL, or in DIMX. |
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FlyboyS4
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« Reply #292 on: March 31, 2015, 07:20:58 PM »
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Here's the change I made to KFLDIMX. On the left is the changed values relative to a stock baseline, and on the right is the resultant table values.  The resulting data for a 2nd and shortened 3rd gear pull are here with a 20150331 filename: http://www.myaudis4.com/tuning_images/logs/I say shortened because around 4500 an anomalous event occurred and I am still uncertain as to what it was. Need to see if I ran something over, popped an IC hose, or something else, but WGDC instantly dropped to 0. It probably won't be until tomorrow evening that I can get around to investigating further. |
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nyet
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« Reply #293 on: March 31, 2015, 10:08:03 PM »
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Possible positive deviation limp?
In any case, before you continue logging you need to add the various PID variables to your setup, particularly I max and the various I limiter adaptations.
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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metronet
Full Member
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« Reply #294 on: April 01, 2015, 08:08:53 AM »
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Keep up the good works, Jeff. I hope everything is ok with your car. You contributed a lot and for a newbie like me I have been reading this topic like a best seller  |
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« Last Edit: April 01, 2015, 08:31:34 AM by metronet »
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FlyboyS4
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« Reply #295 on: April 01, 2015, 06:08:14 PM »
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Daz reminded me that early on we had raised KFMLDMX in a discussion outside the thread. These are the changes that were made and that are in now place with the development tune:  |
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FlyboyS4
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« Reply #296 on: April 06, 2015, 05:48:06 PM »
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My progress on this tune is going back on hold while I have a precautionary rebuild done on the K03's. K03 Troubleshooting |
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Carlo1170
Newbie
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« Reply #297 on: April 28, 2015, 07:29:25 PM »
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I've read this thread over and over and decided to start building my own tune. I've got a 6-Speed, M-Box (converted from A) S4, exactly what this thread was intended for. I'll throw a kink into the mix and say that I'm tuning at 9000 feet elevation, which I believe has effected my tuning quite a bit (especially for these Boost (in PSI) Calculations). I've coded EGTs and Rear O2s out per the wiki.
Car info:
-2000 S4; 154K, Engine refreshed and resealed at 146k) 6 Speed, converted to MBox with Bosch MAF.
-Piggie DPs (rear O2's removed)
-2.5" custom catback with magnaflow muffler
-Custom 3" Intake (Bosch MAF)
-RS4 Clutch
-710N Diverter Valves
As a newbie tuning my S4, this is what I see.. So I do know that these desired boost numbers in PSI are just estimates. So I began with logging stock and moving along with the thread and then I kind of deviated with my requested load and boost numbers. I decided to do this because when I actually log, my requested boost levels are much lower than the "requested boost (in PSI)" within Tunerpro. I also noticed my engine load is not nearly what is actually being requested.. I'm not sure why this is happening. I was thinking maybe it had to do with some of the requested load tables etc.. but none of them are even close to the loads I'm getting..
I've attached the CSV.
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« Last Edit: April 28, 2015, 07:35:52 PM by Carlo1170 »
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nyet
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« Reply #298 on: April 28, 2015, 10:33:41 PM »
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Don't worry about actual load not meeting requested. BTW I dont see any requested load in your logs...
You can definitely get away with a bit more req load.
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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Carlo1170
Newbie
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« Reply #299 on: April 28, 2015, 10:42:54 PM »
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Don't worry about actual load not meeting requested. BTW I dont see any requested load in your logs...
You can definitely get away with a bit more req load.
Ah I must have missed it. My LDRXN looks like this. I know these are maximums, but I'm not getting anywhere close.. 111.35 123.40 135.47 166.50 173.39 176.84 178.57 173.39 171.68 170.98 170.30 168.21 161.68 155.11 150.99 144.78 I did some tweaking of KFMIRL and used berTTos interpolator to get KFMIOP. Hoping that will help a bit. |
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