jokerr9
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« on: August 03, 2014, 05:41:58 AM »
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Hi all.
I have AGU with k03-052 with forge actuator, 2.5" exhaust, FMIC, audi tt BAM injectors, silicone intake hose.
I've tuned my ECU when weather was nearly 15C and afr was 11.2 - 11.4 on 6600rpm (I know tht it reach but now haven't EGT sensor to make it leaner). I have innovate AFR gauge and found that now my AFR in 9.8-10 at 6600rpm with the same load (temp is near 36-38C outside in Ukraine).
The same happens on my friends car with the same config.
Is there any calibration map for lambda by temp in 3.8.3?
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overspeed
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« Reply #1 on: August 04, 2014, 01:14:49 PM »
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yes, there is "Gemischkorrektur durch Luftmassenstrom und Ansauglufttemperatur" but its Flat "1,000" above 25°C
How is your LTFT ? Is it greatter than 8% ?
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Dropout
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« Reply #2 on: August 05, 2014, 01:46:47 AM »
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First, check for vacuum/boost leaks, I had the same problem and it turned out that the plastic vacuum line to the brake booster was split (intake plenum to check valve) and when it got hot it started to leak boost and the mixture went rich. In my opinion what happens is the following, since the m3.8.3 uses only MAF the maf measures air entering for say 8ms worth of load (example only) and commands the injectors to inject fuel for that load/air quantity, but since we have less air actually entering the engine due to the boost leak the mixture ends up richer . Your problem may be due to a different thing but I'd start with a boost leak test when the engine is hot.
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overspeed
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« Reply #3 on: August 06, 2014, 11:20:59 AM »
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First, check for vacuum/boost leaks, I had the same problem and it turned out that the plastic vacuum line to the brake booster was split (intake plenum to check valve) and when it got hot it started to leak boost and the mixture went rich. In my opinion what happens is the following, since the m3.8.3 uses only MAF the maf measures air entering for say 8ms worth of load (example only) and commands the injectors to inject fuel for that load/air quantity, but since we have less air actually entering the engine due to the boost leak the mixture ends up richer . Your problem may be due to a different thing but I'd start with a boost leak test when the engine is hot.
Pretty sure ! that´s why you can check it with LTFT, if it´s greater than 8~10% (ussually it goes much more than this) ECU is taking fuel off to keep lambda =1 in part throtle |
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jokerr9
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« Reply #4 on: August 07, 2014, 03:21:44 PM »
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yes, there is "Gemischkorrektur durch Luftmassenstrom und Ansauglufttemperatur" but its Flat "1,000" above 25°C
How is your LTFT ? Is it greatter than 8% ?
Can't find location of this map. LTFT not greatter than 2%. |
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jokerr9
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« Reply #5 on: August 07, 2014, 03:24:30 PM »
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First, check for vacuum/boost leaks, I had the same problem and it turned out that the plastic vacuum line to the brake booster was split (intake plenum to check valve) and when it got hot it started to leak boost and the mixture went rich. In my opinion what happens is the following, since the m3.8.3 uses only MAF the maf measures air entering for say 8ms worth of load (example only) and commands the injectors to inject fuel for that load/air quantity, but since we have less air actually entering the engine due to the boost leak the mixture ends up richer . Your problem may be due to a different thing but I'd start with a boost leak test when the engine is hot.
I've checked boost leaks. There was one small hole in drossel hose. Replaced it but it doesn't help. |
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jokerr9
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« Reply #6 on: August 07, 2014, 03:33:26 PM »
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Is there analog of FKKVS map in ME 3.8.3 ?
No desired AFR not match actual. Actual is reacher on high load.
I have FGAT0 = 0,7110 (original injectors were 259cc)
TVUB and TEMIN copied from BAM 225hp file.
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jokerr9
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« Reply #7 on: August 07, 2014, 03:35:35 PM »
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I'll try to make logs of AFR/Boost/RPM when find how to connect RPM sensor to innovate boost gauge.
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eliotroyano
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« Reply #8 on: August 14, 2014, 07:54:41 AM »
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I'll try to make logs of AFR/Boost/RPM when find how to connect RPM sensor to innovate boost gauge.
For 1.8T AGU/AEB ecus, you can take RPM signal from ECU pin #6. Wire should be a 0.5mm green/brown or green/blue. The other side is in Dash. Cluster should have a Blue connector 32 pin where pin #11 should be rpm signal. If you don't get a clean signal ( http://vimeo.com/16639325) you can use a 2KOhms pull-up resistor to do it. I have connect like this and work quite good. |
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« Last Edit: August 14, 2014, 07:56:49 AM by eliotroyano »
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jokerr9
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« Reply #9 on: August 15, 2014, 03:28:49 AM »
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For 1.8T AGU/AEB ecus, you can take RPM signal from ECU pin #6. Wire should be a 0.5mm green/brown or green/blue. The other side is in Dash. Cluster should have a Blue connector 32 pin where pin #11 should be rpm signal. If you don't get a clean signal ( http://vimeo.com/16639325) you can use a 2KOhms pull-up resistor to do it. I have connect like this and work quite good. My dash read RPM from CAN (AGU 2009year made). |
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eliotroyano
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« Reply #10 on: August 15, 2014, 11:29:33 AM »
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Ok but you can also take RPM signal from ECU.
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eliotroyano
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« Reply #11 on: August 19, 2014, 04:57:16 AM »
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overspeed
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« Reply #12 on: August 19, 2014, 12:42:42 PM »
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My guess is 8B0E, but as I said it is useless
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eliotroyano
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« Reply #13 on: August 21, 2014, 04:56:30 AM »
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My guess is 8B0E, but as I said it is useless
Junior I thought about it but I discard as at that address map is just 2 x 2, and in others is 5 x 8. Look at my attachments. |
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jokerr9
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« Reply #14 on: August 21, 2014, 05:28:31 AM »
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Today I've found that on each gear ECU made AFR rich at different RPM.
2nd gear AFR perfect(~12.5 - 12.2) untill 5500rpm, then became 10
3th gear AFR perfect untill ~4500rpm
4th gear perfect untill ~4000rpm then became 10-9.6
5th gear perfect until 3000rpm then became 10-9 !!!
So on higher gear AFR is richer.
Maybe it's some protection?
I have load 12 from 2500 to 4500 and boost is nearly 1.4bar on peak and 0.8bar at 6600rpm.
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