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bmwm3user
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InfinityPnP, no injector signal

 

Hello,

I just completed my e85 conversion and AEM Infinity install, I ran the Wizard setup. completed DBW, and all was looking good, but the AIT sensor was reading -4 F (67 actual). Fuel pressure, fuel temp, DBW values, coolant temp were all good. I`m using Bosch 525cc High Imp injector and I set those as Fuel Injector Clinic 525cc in the Wizard. When I finally tried to start the engine, it was only turning over, no start. I had spark and 12v coming to the ECU from the Fuel Pump / Injector relay , but no signal going to the injectors.

Any suggestions fellas?

Thanks!

AEM_NS
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http://aemelectronics.com/?q
bmwm3user
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Anyway, I found the problem

Anyway, I found the problem to be a 30A blown fuse (1 of 5) on the engine harness. IAT still shows -4F, using AEM`s IAT and MAP sensors harness to AUX connector. Now that I started the engine got the chance to log a short session. Where can I send it to, so you guys can take a look why is it running so rich, AFR target 14, labmda1 & 2 show 9.6.

Thanks!

AEM_NS
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Well considering an IAT of -4

Well considering an IAT of -4° would indicate a very cold and dense air charge, it kind of makes sense that your AFRs would be very rich since the Infinity is a true Speed Density system.  Are you using the Pro IAT sensor with DTM connector?  If so, -4° is the highest resistance value of the sensor calibration (which should be triggering the IAT failsafe but perhaps you've got it off) which could possibly indicate that you've got an open circuit.  It sounds like you need to check your wiring.  Once sensor inputs read correctly, you can expect that AFRs would be more reasonable.  

It's mentioned in that link that you need to host your files elsewhere and then provide a link to them here.

bmwm3user
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I`m using this IAT 30-2014,

I`m using this IAT 30-2014, which has the dtm connector, but I had to chop off the Delphi connector that came on the AEM IAT MAP harness, and adapt a DTM one. Also the same harness had the MAP sensor wiring wrong on the female side, but I realized that too late, otherwise i would`ve sent it back.

Here is a link to the log file      https://drive.google.com/file/d/0B0lYW4bS-R9hTkVZZHBDVUZ3eDA/view?usp=sh...

AEM_NS
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Did you disconnect your MAF

Did you disconnect your MAF sensor? I suggest that you still check your wiring because your current air temp suggests that you have an open circuit. Check the AIT_sens [ohms] channel in the Input tab. Try grounding the IAT wire - does AIT_sens drop?

bmwm3user
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MAF was disconnected.

MAF was disconnected. Grounded the IAT sensor connector, no change.

When I connect the MAF, it displays the actual temps, but still dumps lots of fuel. Would you like to see a log of that?

 

Is there a way not to use IAT for AFR adjustments, and does my MAP value make sense (-7psi) ?

AEM_BB
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Post another log with the MAF

Post another log with the MAF for IAT (be sure to select "BMW E46 M3" for IAT selection in the Wizard), using the AllTabs_708 layout this time. There were a lot of channels missing in your last log. Also, be sure to include both the .itlog and .itssn files. 

You may wish to temporarily increase the Lambda Feedback's feedback limits (Wizard > Lambda Control > Lambda Feedback Rich/Lean Limit) to try to get things a bit more in the ballpark, plus I wouldn't suggest running the engine very long as-is with it being that rich.

There is definitely an issue with the MAP value. It doesn't seem to be able to go below 50.5kPa - even before and during cranking (should be about 100kPa at sea-level with engine off). At idle, it should be pulling much more vacuum if it has stock cams, however with the engine being as rich as it is, and us not being able to see, for instance, what the cam angles are at, it is hard to say for sure. Confirm the MAP sensor wiring and MAP sensor selection again in the Setup Wizard before taking another log.

AEM_NS
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No, your MAP doesn't look

No, your MAP doesn't look right. It reads 50kpa before and after the engine starts. Now that I'm looking at it, it looks like your MAP is in error and is following throttle based on the Press Ratio Failsafe table. Again, you need to check your wiring because the two sensors you added in aren't working. IAT is a fundamental input to the Speed Density fuel calc so no, it cant be ignored but instead of trying to come up with work arounds to get AFRs to look right, you really need to just fix the problem you have and you'll have a better chance of thing being right or at least be in a better position to do some proper tuning.

bmwm3user
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Thanks for stepping in BB,

Thanks for stepping in BB,

i made the changes you suggested. The engine has 288/280 cat cams.

The engine didnt want to start with MAF settings, but started with VE MAP. Uploaded both logs, start fail and VE start

https://drive.google.com/file/d/0B0lYW4bS-R9hbnJWbjBvRldCLVE/view?usp=sh...
https://drive.google.com/file/d/0B0lYW4bS-R9hblZkVUREZDNTYnc/view?usp=sh...
https://drive.google.com/file/d/0B0lYW4bS-R9haVhIbXNUMF9neDA/view?usp=sh...
https://drive.google.com/file/d/0B0lYW4bS-R9hbUlRbnQ1Q3VrMUk/view?usp=sh...

AEM_BB
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Sorry, maybe that wasn't

Sorry, maybe that wasn't clear, make sure you're always on "VE" for "Airflow Calculation Method". I was only suggesting that you select the appropriate IAT selection if you're going to use the factory MAF's air temp signal (but not use the MAF or airflow calculation).

 

The engine is running very rich partly because MAP is not reading correctly, but also because the load axis for the VE table has been set to MAP, instead of Throttle like it is in the base cal. Since this engine has ITBs, MAP is not really a good indication of engine load, so MAP typically does not work well for VE. You may also want to consider leaving the Ignition Map in Throttle as well as it is in the base cal (if this is an N/A engine) for the same reasons. Using Throttle for the main load axis still allows for air density/altitude compensations for fueling, as MAP is still factored into the airflow calculation.

 

bmwm3user
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Made corrections to the
AEM_BB
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MAP still doesn't appear to

MAP still doesn't appear to be reading properly. Also, VE table is still set to MAP, so instead of accessing a cell with ~37% VE, you're getting ~84% VE.

AEM_NS
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Your VE table is still MAP

Your VE table is still MAP based when it should be TPS based. Because it used to be TPS based, the breakpoints are relevant for throttle positions (0-100) but because your MAP is reading wrong and is at 55kpa all the time, you're getting fuel like you would for 55% throttle. So, same advice as before - fix your wiring problems and your AFRs will probably be normal or at least not crazy rich. There's no reason to keep starting and running the engine until you fix your IAT and MAP sensor problems.

Are you taking this somewhere to be tuned? Perhaps they can help you sort this out.

bmwm3user
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@_NS , why do you keep

@_NS , why do you keep suggesting that I have a wiring problem?!

If that infact is the problem, an AEM product would be to blame.

I'm using an Infinity PNP for BMW e46 M3, paired with, AEM fluid pressure sensors, 2 AEM widebands + extension harnesses, AEM 2 bar MAP & AEM 1/8 IAT sensors connected to AEM MAP & IAT harness to 12 pin AUX connector on the ecu. All of the products I mentioned are supposed to be plug and play, minus the FFsensor and the 12 position trim pot.

My car runs just fine on stock setup, no wiring issues. 

I`m planning ot taking an Infinity Tuning Course with AEM, and tune it myself.

AEM_NS
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It certainly looks like you

It certainly looks like you have a wiring problem when the temp and pressure sensors you added on don't appear to be working. Have you done anything to troubleshoot this? Checked for continuity between sensor connectors all the way back to the ECU pins? Checked for 5v and sensor ground at the MAP sensor connector? AEM parts or not, you still need to troubleshoot your install problems if you want this to work correctly. If the harness you have is suspect, we'll gladly replace it if it was made incorrectly.

You came here for help and the info you've provided points to a wiring problem. Why are you ignoring what the data is very obviously pointing towards? Fix your wiring problems and this will work correctly for you!

bmwm3user
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Here is the link to the photo

 

Here is the link to the photo of the C1 connector

https://drive.google.com/file/d/0B0lYW4bS-R9hSEVtMU5RSTJ3LXJidy1JOGQ2TGE...

Although, empty slots, the last wire on that row is available at pin 67, and I must say that I have been checking continuity against the wrong pin on the AUX side.

Pin 2 on AUX and pin C1-67 are GOOD, my bad.

bmwm3user
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Yesterday I connected a new

Yesterday I connected a new AEM IAT 1/8 npt sensor, with hopes to solve the non working IAT sensor issue, unfortunatelly same difference, -4F. I am running only the two wires from the sensor to the 12pin AUX connector, even switched the positions of the pins on the female side, still no workie. 

The calibration on my 2bar MAP sensor seem to be off as well, when connected and ignition on, it reads 203kpa. I had an older 3.5bar on hand and tried that one to see if it makes any difference, and it did. Connected and ignition on, it reads 102kpa. For the last log I used te 3.5bar MAP with stock MAF connected for IAT use.

https://drive.google.com/file/d/0B0lYW4bS-R9hZmt5SmhkV3Vqc3M/view?usp=sh...
https://drive.google.com/file/d/0B0lYW4bS-R9hd2NuTDZES1NUYUE/view?usp=sh...

Am I doing something wrong?

Thanks!

bmwm3user
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I have tested 2 AEM MAP

I have tested 2 AEM MAP sensors, 3,5bar and a 2.1bar. The first one is 4 years old out of my boosted m3 and works flawlessly. The latter 2.1bar is brand new and reads off the chart. Both are being connected to the same harness and used with the corresponding setting in the Wizard. The attached links show the sensors being tested with multimeter and the actual reading in the background on the laptop screen.

I'm attaching a photo of the new AEM IAT sensor that I got through Amazon the other day. The IAT sensor has a blocked tip housing, and also does not read correctly the temperature. Is it possible that these are all defective sensors, or perhaps something to do with the scaling?

https://drive.google.com/open?id=0B0lYW4bS-R9hQ3h2RzBLZTdFcEE

https://drive.google.com/open?id=0B0lYW4bS-

https://drive.google.com/open?id=0B0lYW4bS-R9hcWdwY09Ea1dtSjQ