Car stalling after CSL upgrades and DME software update

[HanSooloo]

My 2004 US-spec M3 has undergone the upgrades I originally posted here: https://nam3forum.com/forums/forum/m...104#post156104

Summary:

1. Karbonius intake
2. Schrick 280/272 cams
3. Kassel MAP sensor kit
4. SuperSprint 63.5mm stepped headers (44001), section-1 with sport cats (44002), and resonated twin-pipe section-2 (44003)
5. DME HW update for flap operation at Kassel
6. DME SW update from Kassel; using Terra's modified BIN

After the initial start, car is stalling.

Wondering why this would happen?

I still need to confirm with the shop, but would this happen if the ONLY thing that was flashed was Terra's modified full bin, without the car's original tune being flashed back + change 0xE002 from 00 to 01?

One clarification question RE: the files posted on GitHub repo here:
Can Terra's partial be flashed on a converted US MSS54HP DME? What is confusing in those files is that the filename refers to 2113 2300 0401, but in the 2113 2300 group of Version Strings documented here, page-12, I don't see a 0401 variant. The lowest it goes for MSS54HP is 0601.

For reference, my DME version string is 2113 2300 2701 J469.

[HanSooloo]

Another interesting data point: in the Fix For Error Code Reading on MSSFlasher CSL Tune post, terra mentions that one should change 0xE002 byte from 00 to 01 and flash it back to the DME.

However, in my stock tune that I backed up from the car before the changes, that location ALREADY contained a 01 instead of a 00. Does that mean that I can simply re-flash my original tune back to the car without any changes for proper operation?

[duracellttu]

Did you not get a custom tune after all the hardware upgrades? The CSL software isn’t tuned for those cams.

[BMWfanz]

I have terra 0401 bin- 288/280 cams and Karbonius intake- idle a bit raw but car is not stalling. Seems like EWS or timing missed

[HanSooloo]

Did you not get a custom tune after all the hardware upgrades? The CSL software isn’t tuned for those cams.

Yes, I will work with HassanEido to get a tune. However, I had heard people being able to use the stock CSL tune to at least get it started and going at a reasonable pace.

I have terra 0401 bin- 288/280 cams and Karbonius intake- idle a bit raw but car is not stalling. Seems like EWS or timing missed

The ECU is the original one. What could the EWS issue be?
On the timing: are you thinking when the cams were installed, the components weren't put back properly? Would codes indicate something about timing?

[BMWfanz]

Yes, I will work with HassanEido to get a tune. However, I had heard people being able to use the stock CSL tune to at least get it started and going at a reasonable pace.



The ECU is the original one. What could the EWS issue be?
On the timing: are you thinking when the cams were installed, the components weren't put back properly? Would codes indicate something about timing?

If you flashed full terra bin and tune- you should change EWS in software or turn it off using the ecuworx tune- I think your trouble is EWS difference in your flash and car module

[HanSooloo]

Would EWS cause a stall? I thought EWS would simply block the car from running.

[AWE46M3]

Are connections to the airbox all good? I had a hose that wasn't connected completely at the bottom of my stock airbox after Big 3 were done. My car started stalling every time I hit the brakes after startup. I would turn the car on and back down the driveway and the car would stall as soon as I hit the brakes. We checked the airbox connection and noticed the hose on the bottom wasn't secured properly. Once that connection was fixed the car stopped stalling. Figured I'd mention it in case you're looking for something you can double check while you wait on the coding pros to do their thing.

[BMWfanz]

Would EWS cause a stall? I thought EWS would simply block the car from running.

Sure, it would stall

[Obioban]

The EWS issue displays as the care firing up like normal and then immediately turning off.

[HanSooloo]

Turns out the air sensor wasn't plugged in. After that was done, the car is starting up and not experiencing any stalls. Next up is a proper tune.

[AWE46M3]

Turns out the air sensor wasn't plugged in. After that was done, the car is starting up and not experiencing any stalls. Next up is a proper tune.

Nice! Sounded almost identical to my issue with the airbox. I'm glad it was a quick fix.

[Pklauser]

Gotta love when it's something silly like that. We've all been there!