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Evil

Ok thanks for the precision! All the tests you can do are very helpful, we can really know what happens. I did some quick tests when coming back from work (I will speak with 413 tables numbers for more comprehensivity) O2 disabled to be sure there was no compensation from regulation, I added approxi...

Evil

Again, everything is the same in 403. Secrets of the Motronics are falling :D That's some very good stuff you found here!! Rapid change of the TPS does not affect to the pulse width, except in MAF failure mode. (Alpha N) Can you tell a little more about that? If I understand correctly, could we say ...

Evil

good info! I have the same thing in 403, sizes are the same, scalings are similar (identical for the IAT/ECT table). Values are different on the first, but IMO just because different offsets in ignition timing formulas. For the second tables values are relatively different but the principle seems to...

Evil

Yes, thats why I wanted To set the tables To 0 To "delete" the load correction that occurs with iac position changes, because my IAC has the connector still plugged but not yet To the intake circuit.

Tanks for these prÃ©cisions

Evil

Some updates here, for not "overloading" the 413/506 thread. I have set to 0 both Idle valve position tables. Like I thought my VE table needed some adjustement, mostly at low throttle openings. Still have some problems at overrun/idle transition at stop, AFR take some time to come at 13 w...

Evil

I think D6 might be rate of TPS change. If you make small movements to the throttle then you stay in the LH side but big rapid changes see it go to the RH side. I'm not 100% sure but I think the D6 axis is the voltage increase over X time. I get the same conclusion from what I see in tracing on 403...

Evil

I think we can certainly say that in normal operation, TPS signal is used for Idle/PT and PT/switch, and as axis descriptor for the limp mode alpha/n table and for a 10x1 table in E45C. (same thing on 403) Values in the tables in D6E6 and D6F8 are min/max throttle position for Vanos activation, if I...

Evil

Found something just after the MAF transfer table in the 413: https://preview.ibb.co/nLfOvG/Sans_titre.png It's followed in the code by some FF FF , maybe are they part of it? It's in 16bit LoHi like for the MAF. I have the same thing in my 403 but in 16x1 and with lower values, the curve is a littl...

Evil

Idle valve position affects to "LOAD" in 413 and 506 , when MAF signal is faulty or missing. I think in 403 it does same.. MAF signal was used in those last tests, so LOAD doesn't change and fuel remains same. It certainly does (and it would make sense) in 403 too. This must be the explan...

Evil

olafu wrote:No, 0 = Closed, 255 = Open. But actual dutycycle doesn't go to 0 or full 100..

Ok, thanks for the precision

Evil

Here are the results: (I run E85 but my gauge is on gas scale) -With the whole 2 tables set at 255: AFR goes VERY rich. I was at 9.6 at all states/throttle positions, which is the limit of my gauge... So maybe it was lower than that. -With the whole 2 tables set to 5: AFR goes lean, between 16/18, s...

Evil

On my 403 this one is traced everytime EXCEPT on overrun fuel cut... Tested - again - and no tracing in overrun. IAC valve gets different duty cycle from somewhere else in overrun. :oops: EDIT:But this 4x6 (0xE3F0 - decel/overrun fuel) seems to be overrun idle valve position table. Its traced at ov...

Evil

0xE3BC 6x6 Rpm x ECT which is named "Idle Valve Airflow" in the Excel file ; I think that is only a some kind base position of idle valve at different engine speeds and temperatures. Ecu reads it always when engine is running. I was used that to correct idle problems (stalling, "pump...

Evil

I'm seriously reflecting about acceleration enrichment too. Like you said Hairyscreech, the "accel enrichment" table we all use seems to have no effect or just a little; setting all the table to 255 (I tried also 254) makes no noticeable change. Fot the influence of PT fuel table on accel:...

Evil

Little question about 2 tables in the 413: 0xE3BC 6x6 Rpm x ECT which is named "Idle Valve Airflow" in the Excel file ; 0xE3F0 4x6 Rpm x ECT "Deccel/ Overrun fuel Thes 2 maps have the same ECT scaling, RPM scaling is similar too since the 6x6 table has just 2 more points at lower rpm....

Evil

Little question about 2 tables in the 413: 0xE3BC 6x6 Rpm x ECT which is named "Idle Valve Airflow" in the Excel file ; 0xE3F0 4x6 Rpm x ECT "Deccel/ Overrun fuel Thes 2 maps have the same ECT scaling, RPM scaling is similar too since the 6x6 table has just 2 more points at lower rpm....

Evil

on 403 I have both for lambda regulation: a 6x6 table and 3 2D tables. Set the whole 6x6 table to 0 turns the lambda regulation off, same thing for the 3 2D tables. On the 413-623, datas in the table in 0xE204 are very similar to the table of the 403... maybe these datas are a coefficient for the PI...

Evil

Many of these stuffs (DTC codes, min/max thresolds, self-references are very similar in my 403 bin

Not very useful for you anyway, that was just to tell you that I pay a lot of attention to your work, it's very interesting!!!

Evil

Thanks To both of you for your answers, and of course for your work, I follow this thread with many attention.

Evil

O2 flag is D00A on the 413 and D00B on the 506, it should be the same on both? So wich one is the the good one? Are the "lambda off" tables confirmed to work for disabling lambda regulation? I did a try on my 403 with a 6x6 table RPM/load , with all values to 0 Lambda and adaptatives seems...

Evil

Set all values to 0 in this table will turn off O2 regulation and adaptatives, did some tests this morning and it works

Evil

Like Olafu said MAF "table" is a conversion function. This means that replace the maf with a map and just tune the table will not work because the map signal on its own is not sufficient fort load calculation. Speed/density needs a VE table to work, like alpha/n. You could maybe replace th...

Evil

Hi,
IAT descriptor on a 403 dme is D0. Factor is X*0.75-48 in Â°C.
D3 seems To be "transitions " related, like throttle variation rate or something like that.

Evil

Thanks!

Evil

Very interesting!
Which utility did you use ?

Evil

Yes and travel in the North fot the cold size of the map

Evil

I have found why my IAT was not varying: a wire was cut in the plug under the protection. So the DME was using a default value (60°C) So now my IAT is working and the proper temperature is traced on the table. The 8x5 table is now 8x14 with 10°C steps from -30°C up to 100°C, which is probably too hi...

Evil

Conversion To a MAP sensor instead of a MAF can be a good idea but I'm not sure it could be possible To just "electrically" do It. Some.motronic use a MAP sensor, like on some Peugeot like old 306 S16, but also use a VE table. It could be possible To use a MAP instead of the TPS, and then ...

Evil

On ignition tables, values are in degrees BTDC.

Evil

Interesting To know that both are compatible.

For tuning with Vanos I think that like Hairyscreech said it would be a good idea To play with max/min load To force Vanos in one position To tune each table.

Evil

Fuel tables are only "correction tables". The DME calculates the LOAD (which in a Motronic is injection time), with MAF signal, injector constant and engine speed. (except at WOT but not the problem for the moment). This load is calculated to reach stoich AFR. Fuel tables are then used whe...

Evil

yes you should reset default codes and retry .
If your DME is a 413 red label, so the 413 red label should work.
If not it will not be better with a bin from another type of DME.

Evil

free image hosting

MAF transfer table from a DME 404, which I think is the good for your MAF.

Max value is higher than the 413 one. (The table is in 16*16 to be fully view in the screenshot, but it is in reality a 256*1 in 16bit LoHi

Evil

For me it would make more sense to use the 413 bin, but I can not surely tell if a 506 bin is good or not. Maybe a difference in any sensor, and surely difference in the MAF transfer table (anyway you should tune this table when runnig a 540i MAF, I think you could easily find the values it in a 540...

Evil

Are you sure a 506 bin can work in a 413?

Evil

Just a little update: I extended the WOT fuel table with success, she's got now 28 rpm steps. All cells are traced at the good RPM so now just need to tune it. https://preview.ibb.co/hDDzDk/Sans_titre.png free image hosting Not a big upgrade, but it's just to confirm the method works. I will do it t...

Evil

Give me your mail (in PM if you want) and I'll sent you the 413 red label xdf.
You can't adjust idle fuel map (and no any other) without the good XDF.

You will also need to tune the injector latency (bigger injevtors are often slower to open than smaller ones)

Evil

By changing injector constant you will have to modify load scale on every tables that use the load as descriptor. LOAD on our Motronics DMEs is injection time needed for stoich, so if you modify the injectors constant (which is used for load calculation)without modify scaling you will have a poor de...

Evil

You must open TP first, and then click on "XDF", "select XDF ", and then choose your file.

Evil

No need To convert anything, you just have To open your bin file and xdf file it with Tunerpro...

Evil

you can find it in the download section on the Tunerpro website:
http://tunerpro.net/downloadBinDefs.htm#BMW

Evil

So you have To use the 413 xdf ðŸ˜‰

Evil

Hi,
Whats your DME, is it a 506 or a 413?
If you try to open a 413 bin with a 506 XDF it will not work, tables adresses are not the same.

I've download the bin and XDF for dme506/soft 965 (M3 usa) and it works well...

Evil

Are you now using the 32lb or the oem? If you are using the oem, just check your AFRs at WOT , that could avoid you a lot of work!

Evil

Hi,
your injector constant will depend of the size of the original ones (those that where used with your DME).
Dont forget that you will also have to tune the injectors dead time, and also re-scale all maps which are load related.

Evil

Like you said I think that switching one adress in the table list would work. I think that the DME is looking at thÃ© 2 tables and averaging only in case of failure in the vanos solenoid circuit. For thÃ© variable intake I was thinking doing a simuler thing with variable lenght velocity stocks, some...

Evil

I see what you talk about with chnaging descriptors, I did a try on the canister valve table To make it work with ECT with success, To see if I could use this output as a "programmable" output, like for a shift light or something else. I will later ses is the same thing can be done with th...

Evil

Olafu, I took a look a the 3x4 table you said in E044 in the 413/623. I have a similar table in my bin, you can see it in this screenshot: https://preview.ibb.co/jYO115/IAT2.png datas are not the sames but scaling for ECT and IAT are the same. By seeing that the 2 tables you talked about are similar...

Evil

Hi, Yes it would be a very good thing to extend the size of these tables :D To tell the ECU to point only one table I really dont know how to do, It certainly needs to re_write some code but I dont know a F*** about it :lol: I think you already knows but you can also tune identically the 2 tables :w...

Evil

What BIN number you are using? I did some research about that at last year with 623 BIN. Unfortunately seems like there is no IAT correction for TPS based "Alpha-N" limp map. BUT there is somekind "knock prevention map" or something at E044. It is air temp and engine coolant tem...

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