Car shifting rough after SMG CSL update

[S3diment]

Just applied the CSL SMG tune and the car is shifting rougher than before, and there is a much more noticeable clunk from the rear. Any thoughts? Should I run adaptations?

[oceansize]

Yes. I did after applying to mine. Have you done both the engine and SMG DME tunes?

[S3diment]

Yes. I did after applying to mine. Have you done both the engine and SMG DME tunes?

I did not. Is that necessary? Is that via Winkfp or NCS Expert?

[oceansize]

Strictly speaking it is not but to maximize potential it should be applied.

https://www.ecuworx.co.uk/how-to/updating-the-smg-ecu-to-run-csl-255-software/

https://www.ecuworx.co.uk/how-to/using-the-mss5x-binary-modification-tool/

[COVID-19]

IMO if only done to the SMG ECU then it’s mostly useless until you do it to the DME.

[S3diment]

Thanks all! Here is the tune that I applied:

https://www.autoevolution.com/pdf/news_attachements/how-to-install-bmw-csl-smg-software-in-your-standard-m3-62309.pdf

How is it different than the first link that you posted? I’ll try to do the second one that was posted.

[oceansize]

Thanks all! Here is the tune that I applied:

https://www.autoevolution.com/pdf/ne...d-m3-62309.pdf

How is it different than the first link that you posted? I’ll try to do the second one that was posted.

You flashed the SMG ECU, the link below is to flash your engine DME. They work in concert and I agree with what COVID-19, both really should be done.

https://www.ecuworx.co.uk/how-to/usi...fication-tool/

[S3diment]

You flashed the SMG ECU, the link below is to flash your engine DME. They work in concert and I agree with what COVID-19, both really should be done.

https://www.ecuworx.co.uk/how-to/usi...fication-tool/

Thank you, going to try it now. As I understand it the MSS5X is a one-click tool to flash/reflash the DME whereas one can manually update it as well using the values provided here using BMWFlash (obviously specific to the CSL SMG DME): https://nam3forum.com/forums/forum/s...parameters-dme

[heinzboehmer]

Thank you, going to try it now. As I understand it the MSS5X is a one-click tool to flash/reflash the DME whereas one can manually update it as well using the values provided here using BMWFlash (obviously specific to the CSL SMG DME): https://nam3forum.com/forums/forum/s...parameters-dme

The ECUWorx tool is meant to provide a visual interface for the popular tune modifications (shift lights, SMG rev match and inertia stuff, etc). You still need another tool (BMWFlash, MSSFlasher, etc) to read/flash your DME.

And yes, you can just read off your tune, follow the directions in that thread to modify the appropriate sections, and flash it back to your car. The CSL maps are just regular maps modified (by BMW) to provide better shifts. So if you replace the existing maps in your tune with the CSL ones then you'll have all the CSL DME stuff.

[S3diment]

Thanks just did it. I think there is a much more audible clunk from both the front and the rear. Hopefully it gets better over time.

[oceansize]

Thanks just did it. I think there is a much more audible clunk from both the front and the rear. Hopefully it gets better over time.

Run adaptations? What mode are u in? I only drive in S5. Occasionally S6. When you start the car is it in A3?

[Arith2]

SMG CSL software is going to bring out a clunk big time. It shifts hard. That's a hydraulic clutch system. Lamborghini, Aston Martin, and Ferrari have similar styles of tech in them from the era and they have hard shifting. Thankfully our clutches last longer than 30k miles and aren't $5000 in parts.

Update: Just made the swap to CSL and the engine tune helps SIGNIFICANTLY. The engine isn't fighting the transmission anymore.

[eacmen]

Bump to the top. Is there an easy way to check if my SMG ECU is already flashed to the CSL software?

[oceansize]

Bump to the top. Is there an easy way to check if my SMG ECU is already flashed to the CSL software?

If u turn off the car in manual mode and it starts in A3 then u have the csl. CSL software doesn’t remember the last mode.

[eacmen]

If u turn off the car in manual mode and it starts in A3 then u have the csl. CSL software doesn’t remember the last mode.

thanks! I must not be running the csl sw. Looks like i got my next project to do.