will15
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Posts posted by will15
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7 minutes ago, hjtrbo said:
The 100 - 102kPa you mention in the scanner is absolute pressure.
2 Bar MAP = Absolute pressure 0 -> 200kPa
2 Bar Boost = Gauge Pressure -100 -> 100kPa
Sorry man i don't really follow what you are saying, a map sensor is manifold absolute pressure and weather its a 1 bar, 2 bar, 2.5 bar, 2.7 bar sensor it should read 102 kpa at sea level key on engine off.
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Hey guys trying to get my head around the pcmtec scanner, iv been using hp tuners scanner but always drops out. I have been trying to log LTFT but when i do it always reads 128, is there a setting to change this to %?.
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4 minutes ago, Roland@pcmtec said:
Use a turbo OS and strategy as a base if you can do it without dsc/abs faults. Other wise this thread may assist.
Yes i have all ready done this and still have the same problem , have not even got onto boost yet
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11 hours ago, jakka351 said:
96 kPa with the engine off likely means you are reading atmospheric pressure in the absolute form, as opposed to kPa gauge which is gauge pressure, where 0 starts at atmospheric pressure which is typically around 101 kPa-absolute.
Every map sensor i check like this and they read around 100-102kpa in the scanner, i live at sea level and i don't see why this would be any different. The scanner is set to kpa i don't belive you can change it to absolute pressure.
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Ok this BA N/A territory is kicking my ass, its supercharged and my normal tuning methods are not working e.g scaling injectors. i can't seem to scale the injectors with the fuel trims like a normally do and when i turn turbo logic on it go's from rich to lean and i have to put a totally different setting in. Currently i have it running well with turbo logic on but the fuel trims are saying it's rich -20 % and i know its lean (wideband). Is there some closed loop setting that i need to change for turbo logic to be on. P.S this same thing happened on a BA n/a barra swap with turbo i had and the only way i got around it was unplug the o2 sensor.
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never heard of a re-cal on map sensor, i just need the proper data (kpa vs volts). Its suppose to be a BA turbo one you would think those settings should work, i didnt really want to have to go though and do my own kpa vs volts with a mityvac and scope.
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102kpa on the dyno
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Hey guys i have a ti performance ba turbo style map sensor fitted to a n/a territory with a raptor supercharger, i have changed the map setting as per a ba turbo map sensor and im getting 96 kpa reading with key on engine off it should be more like 101 - 102 anyone had this before?.
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1 hour ago, Roland@pcmtec said:
Why are you using recovery mode?
Use partial write which is ~30 seconds on a BA.
After I turned off pats and re-flashed the vin disappeared and could only reflash in recovery mode, this is not normal?
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Hi is there a way to a speed up the reflash on a stand alone ba na ecu, currently I’m using recover mode and it takes about 4mins. Is there any other way?
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8 hours ago, Whiteford said:
A8RG is the teartag.
8R29-14C204-ARG is the PCM strategy. HAEDGR2 is also another name for the PCM strategy but its the same thing.
8R29-7J105-CH is the ZF strategy that is suited to 8R29-14C204-ARG.
A8RG will create a stock file but it doesn’t look right (wrong diff ratio and stuff like transfer case enabled) and 8R29-14c204-ARG won’t create a file. Where did you get the HAEDGR2 strategy from?, I will try that.
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4 minutes ago, Whiteford said:
The only way to be sure of the correct strategy for this vehicle is to look at the drivers door jam and identify the TEARTAG from the label.
I have done that which code are supposed to use there is letters and numbers every where
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Just now, will15 said:7 minutes ago, Roland@pcmtec said:
They are not the tear tags.
The tear tag is A8RG or use the strategy like HACCKGA. The TCM will download automatically if we know about it. If the TCM is different then use "Create Stock File From Existing File"
It is possible that we truly don't have the stock TCM file, however we have the majority of them.
7 minutes ago, Roland@pcmtec said:They are not the tear tags.
The tear tag is A8RG or use the strategy like HACCKGA. The TCM will download automatically if we know about it. If the TCM is different then use "Create Stock File From Existing File"
It is possible that we truly don't have the stock TCM file, however we have the majority of them.
I have used the a8rg to create a stock file but it has weird stuff in it like the wrong diff ratio and transfer case. Sorry I never have had to use a tear tag to create a file, is it a file that is %100 for that car?
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7 minutes ago, Roland@pcmtec said:
They are not the tear tags.
The tear tag is A8RG or use the strategy like HACCKGA. The TCM will download automatically if we know about it. If the TCM is different then use "Create Stock File From Existing File"
It is possible that we truly don't have the stock TCM file, however we have the majority of them.
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It says could not download the following stock file 8r29-7j105-cd . Its in a fg xr6 and some one has swap computers and the tune is all over the place plus the ICC is not working any more. I think its not the right ecu and they have created a new file with A8RG and flashed it in. The tear tag has pcm 8r29-14c204-arg tcm 8r29-7z369-cc
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Trying to set this ecu back to stock before i tune it and the return to stock function is not working, can anyone help me out. cheers
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9 hours ago, Roland@pcmtec said:
9v is way too low. Anything less than 11v will reset the ECU.
You likely have a dead battery.
You can reconfigure the voltage look up table to use the e85 tables at 0v and 98 at 0.02 as a fail safe if you want.
Hey Roland can we re-scale some of these cold start tables to get better resolution in temp range we need. Some of them are in the -40deg i would say it will never see that kind of temp.
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6 hours ago, finnigan001 said:
Just a side question. How are you guys powering your flex fuel sensors or are you just doing straight E85 tunes.
I ask coz i notice that the voltage to the flex fuel sensor during the switch from acc to on must be low enough for the sensor to turn off and send 0v to the ECU. The gauge etc stays on, but the signal to the ecu drops out causing the 98 tables to be used initially. Once the car starts to crank over then the values come back to the High Slope as voltage slowly returns to 11.5-12v.
I think one of 2 things are happening. Either battery is no good and voltage is dropping to low - i have seen as low as 9-10v on startup- not sure if that is normal. Or ecu turns off/reduces voltage to accessories during the switch from ACC to ON. The later will affect me as i just did the ole cigarette lighter power source hack.
So just wondering are your gauges wired the same or by a relay etc. If you are using a relay, is there a power source that is constant power during the switch from ACC to ON that remains 12v that can be used as a trigger wire that you've found.
Mines powered and earthed from the rear o2 sensors, you need to use the ecu for power and earth or the voltage off set will wreak havoc on the readings
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8 hours ago, Puffwagon said:
The reason I suggested logging fuel source is in case the cold map was causing the issue. The more channels you log, the more chance of noticing something happening, but I'm sure that's fairly obvious.
So the stft is not causing it to do it? The fuel trim would react to an afr change like that but it's not moving before the afr changes?
Is the nbo2 sensor all good? Sometimes the wiring can get hot and can melt, causing issues.
Just brainstorming here, maybe it helps, maybe not.
Nar it’s all happening in open loop, I’m laptop died today hopefully have it back soon and I will do some more logging.
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On 6/26/2020 at 3:34 PM, Puffwagon said:
What are your trims doing just before and when this happens? Is there a tip in fuel thing that is used when it gets put into gear? What fuel source is it using when this happens? Is there some funky interpolating going on at this temp? Is there a large difference between the base fuel and cold fuel map that it's possibly switching between?
Just a few things I would think of looking at, mebbe someone has something else to add?
I will see if I can log fuel source. Everything else looks fine
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Long terms are turned off, this is a flex fuel tune but I don’t think that’s causing any issues because I tuned another non-flex e85 auto and it did the same thing. Coolant temp vs lamda table looks fine, there must be some multiplier table in there doing it.
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I’m pretty happy with my cold start but there is one issue I have not been able to resolve, when coolant temp is around 50c and you restart the car it starts fine but when you put it in gear the commanded lamda go’s form 0.95 to 0.7 and make it hunt for about 10sec then it will go back to lamda 1 but then it will go to lamda 1.17. I think there is a hard limit set to 1 but that gets over ridin. Wideband confirms this as well.
If I don’t drive off and put it back in park it will go back to lamda 1 but slip it back to drive and back to 0.7, it will do this in the first 1-2 mins from start up.
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15 hours ago, finnigan001 said:
Sometimes I wish I knew where to find the actual functions that showed how these variables operate. But then I’d be down another rabbit hole. 😂 I’ve had issues with trying to work out other variables like fuel pump. Still don’t think that works how advertised.
Any other advice on the cold start up? Looks like just the multiplier and maybe crank spark seems to be enough(I haven’t touched yet).
Can you send me your tune so I can have a look.
n/a BA territory supercharged
in Engine Tuning (AUS)
Posted
Hey mate cheers for that, i had already disabled LTFT's im just going off what the STFT's at the moment.