NefMoto

Hello,

it is possible to enable EGT probe on AUDI A4 1.8t BEX?

Which maps or bits I need to change?

reverse everything the wiki says to disable it

 
Would this work an all 1.8t non EGT cars?

I don't see the point of adding a narrowband EGT probe.

A wideband makes more sense, but requires a bit more work.

Aren't we talking a actual EGT probe like on the S3 and Leon Cupra R?

Not sure but most of the stock EGT sensor stuff in ME7 is narrowband. the RS6 (iirc) is one of the few exceptions.

I don't know much about the S3 and Cupras but their EGT code is likely different from any A4 1.8 code.

As far as I know, the BAM 225bhp K04 has an EGT probe in turbine housing and is me7 wideband :)

And my interest is for transverse K03s 1.8t (sorry for the thread jacking)

Ah. I did not know that!

Would it be possible to EGT through probe instead of modeled EGT with code words and/or maps on wideband me7?

Given that the code is present, or is it a system constant?

(Split topic if needed :) )

I was under the impression that ME7 with wideband support (eg. the RS6) uses sensor values instead of modeled values when applicable already.

I could be wrong, and BAM, s3 etc might be different.

I want to by BAM ecu and write dump from my ecu(8E0909518AN 1.8t BEX) inside, becouse my ECU doesnt have electronics for EGT probe(pin 61).
So if anybody know how to enable egt probe in my ecu(which maps, bits)?

Ineed this protection because I have modified engine(GT35R,630cc, 2.0t stroker,....).

Why would you overwrite the BAM ecu with BEX if BEX doesn't have WB EGT support?


If that ECU doesn't physically have pin 61 connected to a pwm input (and/or whatever other electronics required for EGT) why would you want to use that ECU?

I'm not sure I follow your reasoning.

A4 (1.8t BEX) have different cooling system (J293-coolant control module pin24) and BAM ECU doesnt have this pin in use(ELSAWIN).
If it is possible to modify cooling system even better ;).

If the ECU you want to use does not have a pin to connect the EGT sensor to, no amount of map modifications will make it work... unless I'm missing something from your question..

It does not. No ME7 does that.
EGT is used only for ATR PID. No difference between RS6 and 1.8T either.
Any 32mhz 1.8T wideband ECU can take EGT PWM input.
Have not checked on BEX, but BEX has 40mhz processor, firmware not compatible.

I assumed he meant ATR, not BTS, since BTS is designed around the concept of EGT model rather than actual EGT.

I also assumed narrow band ATR PID wasn't really a PID at all...

So my only option is to change cooling system?
Do you know if some Audi A4 or Passat have EGT probe(I have check in ELSAWIN by part number of EGT probe06A919529 ,B,C,D and only Audi TT,A3,VW Jetta,Bora)

Explain your purpose. How do you want the EGT sensor to work? How do you want to use its input?

I am asking this because if you just install a 3rd party EGT gauge/sensor with "alarm" function, you could use the safety feature of energizing a relay to cut boost for example. Then you can still keep your cooling system as is.

Do you intend to use it to trigger TABGBTS and BTS component protection as in replacing the EGT model by real EGT? That would be nice if possible.

Explain please!

Yes I want TABGBTS AND BTS component protection and replace EGT model by real EGT.

How about stop assuming and start reading FR?
Might make fewer silly statements that way...

Not possible without code changes.

Best solution for the author would be to swap the bam ecu into the car and re-wire whats necessary.

I dont know about abs, esp and gearbox/speed input and so on.

Hacks are needed anyway, so might as well use a 2nd o2 sensor signal and feed it with EGT analog output. Then write custom code for BTS enrichment based on this new input. I think it will take much longer to rework the original software to do the tasks you desire.

Thanks for replies,

Does anybody know what kind of signal ECU is sending over pin 24 to J293-coolant control module 8E0959501AG(AB,K)?

Dear PRJ,

I have find ECU that is maybe 32MHz .

8E0906018B it is comming from 1.8t Audi A4 AVJ from 11/00 to 09/01 and it have pin 24 for controling cooling system(same wiring as my 1.8t bex).
Is it possible to write dump from 8E0906018B to BAM ecu and enable EGT probe?

I am comparing bin files( some areas are shifted).
Can somebody tell me if these maps are sufficient for enable EGT probe?

CDATR,CDATS,CATR,TABGSS,CLAATR,CLAATS.

RS6 doesn't do that, EGT is only used in ATR.
Thought about patching it into BTS, but never got to it. Model is quite accurate anyway.

EDIT: bleh, went to reply before reading till the end. :\

Oh well, then here's the idea to implement "real" EGT into BTS:
Quick and dirty hack that comes to my mind: find reference to FBSTABGM and replace the axis lookup "mov     r14, tabgbts_w" with "mov     r14, tabg_w" (or tats_w).
There are couple downsides to this approach, but it generally should work (that is, if you have wideband EGT sensor already functioning with stock code).