[baron95]

Originally Posted by buddyboy

Glad i came across this thread! i just picked up a new to me 2021 G80 last week so ill definitely reach out to try this CS flash bundle !

Do it. You will not be disappointed. And being a 2021 you don't need to worry about the warranty shackles.

[MLife614]

I want to give a shout out to Kubux86, remote tuning was fast and easy, communication was straightforward. i an the first owner and will be the last on my 2026 G80 M3 compxdrive Dravit. Compare during my break-in period…I was annoyed by the fake sound pumped into cabin. The steering was numb…power was bumped on LCI…however the shifting was sluggish. The CS flash truly added some nice weight to the steering and with the bundle package, I enjoy the AntiDazzle while driving at night which was very noticeable. The shifting are much faster and smoother when both accelerating and coming to a complete stop. Knowing that I have a nice top end mph limiter available…will try to push it when I can safely enjoy on an open road. The ride quality is definitely firm, but as my daily, I’m used to it for being over 50 years old and coming from a Tuned E92 M3 and lots of pass cars with different suspension setup: performance is definitely a different kind of beast!! If you are looking to add an OEM plus setup this would be a great improvement and an alternative to All the other upgrades out there!! Great price and professional help readily available!! Thanks again to Mr Kubux for my CS Flash tune. It was “worth it” !!

[VectorM4]

2024 X drive M4
Simple questions here prior to getting These flashes should i update my car first, right now the last update my car took was around june of last year, i am curretly happe with it and i have not had any issues and i have had updates turned offi ask because bascilly my car will then be frozen with the version its on

Thanks for any advice and info

Been excited to step from stock to this set of flashes before moveing on to ECU unlock later

Thanks Jeff

[kubax86]

Originally Posted by VectorM4

2024 X drive M4
Simple questions here prior to getting These flashes should i update my car first, right now the last update my car took was around june of last year, i am curretly happe with it and i have not had any issues and i have had updates turned offi ask because bascilly my car will then be frozen with the version its on

Thanks for any advice and info

Been excited to step from stock to this set of flashes before moveing on to ECU unlock later

Thanks Jeff

Honestly up to you, newest update doesn't bring anything significant.

[mattmcb345]

Hey all,

Newer to the forum and I just brought home my 2026 M3 base/6-speed 3 weeks ago, likely getting its 1200 mile service in 3 weeks give or take. I am planning to do the CS steering flash as vague on center and lack of returning to center drives me nuts.

Is there anything else I should code that won’t potentially risk a warranty issue? I don’t need more HP as of now so that potentially risky flash is out plus I don’t really want a louder start up of 900 RPM idle as my neighbors and wife will mirder me. The suspension seems fine I guess. Is there anything I’m misssing that makes the experience a lot better?

It’s my daily and I’m rarely ever going to be turning off DSC or activating MDM unless I have no kids in it or find a track a few times, so the differential doesn’t really seem to need a tuning IMO but open to all thoughts.

[kubax86]

Originally Posted by mattmcb345

Hey all,

Newer to the forum and I just brought home my 2026 M3 base/6-speed 3 weeks ago, likely getting its 1200 mile service in 3 weeks give or take. I am planning to do the CS steering flash as vague on center and lack of returning to center drives me nuts.

Is there anything else I should code that won’t potentially risk a warranty issue? I don’t need more HP as of now so that potentially risky flash is out plus I don’t really want a louder start up of 900 RPM idle as my neighbors and wife will mirder me. The suspension seems fine I guess. Is there anything I’m misssing that makes the experience a lot better?

It’s my daily and I’m rarely ever going to be turning off DSC or activating MDM unless I have no kids in it or find a track a few times, so the differential doesn’t really seem to need a tuning IMO but open to all thoughts.

Engine flash is not possible on G80 MT anyway, so you’re good to go get steering/diff/traction/suspension. Of course you can opt out whatever you want.

https://bimmer-remote.com/products/c...-m3-m4-g80-g82

[mattmcb345]

Originally Posted by kubax86

Engine flash is not possible on G80 MT anyway, so you’re good to go get steering/diff/traction/suspension. Of course you can opt out whatever you want.

https://bimmer-remote.com/products/cs-flash-for-bmw-m3-m4-g80-g82

Just curious, what the differential flash does / how the car behaves?

Same for traction and suspension?

[kubax86]

Originally Posted by mattmcb345

Just curious, what the differential flash does / how the car behaves?

Same for traction and suspension?

suspension is a little firmer but still compliant in my opinion, as for diff and traction - allows for more slip, and it allows you to drive easier and better in my opinion.

[kubax86]

Originally Posted by MLife614

I want to give a shout out to Kubux86, remote tuning was fast and easy, communication was straightforward. i an the first owner and will be the last on my 2026 G80 M3 compxdrive Dravit. Compare during my break-in period…I was annoyed by the fake sound pumped into cabin. The steering was numb…power was bumped on LCI…however the shifting was sluggish. The CS flash truly added some nice weight to the steering and with the bundle package, I enjoy the AntiDazzle while driving at night which was very noticeable. The shifting are much faster and smoother when both accelerating and coming to a complete stop. Knowing that I have a nice top end mph limiter available…will try to push it when I can safely enjoy on an open road. The ride quality is definitely firm, but as my daily, I’m used to it for being over 50 years old and coming from a Tuned E92 M3 and lots of pass cars with different suspension setup: performance is definitely a different kind of beast!! If you are looking to add an OEM plus setup this would be a great improvement and an alternative to All the other upgrades out there!! Great price and professional help readily available!! Thanks again to Mr Kubux for my CS Flash tune. It was “worth it” !!

Thanks for your detailed review

[JerseyM3]

Can different interior lighting, audio functions and main screen display options be coded into the g80 or no?

[kubax86]

Originally Posted by JerseyM3

Can different interior lighting, audio functions and main screen display options be coded into the g80 or no?

Depends on headunit version

[JerseyM3]

Originally Posted by kubax86

Depends on headunit version

2025 LCI

[kubax86]

Originally Posted by JerseyM3

2025 LCI

Interior lightning colours only since headunit is secure coded

[JerseyM3]

Originally Posted by kubax86

Interior lightning colours only since headunit is secure coded

Got it. Thanks! If btw i decide to do this, does this affect the DME flash counter totals? Just asking for a friend. 😆

[kubax86]

Originally Posted by JerseyM3

Got it. Thanks! If btw i decide to do this, does this affect the DME flash counter totals? Just asking for a friend. 😆

It doesn't. Friend is safe

[VectorM4]

Kubax, I had the CS DME Flash and CS Flash done on my BMW G82 this morning, and everything went very well. I’m still fairly new to BMWs, so it took me an extra try to get the car into diagnostic mode, but now that I know more about what to do and what to look for, it would be much easier next time.

Overall, the process was smooth and didn’t take very long. This is my second S58 car, the first being a 2023 X3M and now a 2024 M4. Both cars sounded similar, just with different chassis characteristics. After the flash and startup, I could tell almost immediately. Once the car settled into idle, I could tell there was a noticeable difference there as well.

On the drive to work today, the car felt noticeably different in the ride, steering, and throttle response, both in everyday driving and at wide-open throttle.

As a customer, I’m very happy with the experience and the results.

[snelldogg]

Kubax is amazing. Money well spent. Immediately felt the difference. Any sluggishness off the line is gone and once in Sport or Sport+ just Wow. Mine was pre LCI so quite noticeable.

[Angler1]

Kubax

Car is 2025 LCI G80M3CX. You flashed with M3 CS Diff, Trans, etc., and M2 CS ECU. ..Anti dazzle, ASD delete, etc. Current software is 07/2025.51.

I am going to unlock and have Bend Calibration tune the car on MHD+. I want to get the ECU back to stock and build off of that. I expected to just wait for an OTA and get it all updated on current software before unlocking, but I'm getting close to needing to do this. (Since Xdrive, I expected would need your help fixing drive train errors after this anyhow.)

Question 1 - can you apply the current bmw software? (Then fix drivetrain, and re-flash M3CS diff, trans, susp, steer, traction, anti dazzle, ASD delete)

Question 2 - this might be the wrong forum for this. But I bought MHD bundled with XHP. If I have plans to play with xhp, should we avoid parts of M3CS? Trans, etc?

Trying to plan and looking forward to your thoughts.

[kubax86]

Originally Posted by Angler1

Kubax

Car is 2025 LCI G80M3CX. You flashed with M3 CS Diff, Trans, etc., and M2 CS ECU. ..Anti dazzle, ASD delete, etc. Current software is 07/2025.51.

I am going to unlock and have Bend Calibration tune the car on MHD+. I want to get the ECU back to stock and build off of that. I expected to just wait for an OTA and get it all updated on current software before unlocking, but I'm getting close to needing to do this. (Since Xdrive, I expected would need your help fixing drive train errors after this anyhow.)

Question 1 - can you apply the current bmw software? (Then fix drivetrain, and re-flash M3CS diff, trans, susp, steer, traction, anti dazzle, ASD delete)

Question 2 - this might be the wrong forum for this. But I bought MHD bundled with XHP. If I have plans to play with xhp, should we avoid parts of M3CS? Trans, etc?

Trying to plan and looking forward to your thoughts.

1 - yes I can
2 - no reason to do it

[kubax86]

Originally Posted by snelldogg

Kubax is amazing. Money well spent. Immediately felt the difference. Any sluggishness off the line is gone and once in Sport or Sport+ just Wow. Mine was pre LCI so quite noticeable.

Thanks man!

[buddyboy]

Originally Posted by kubax86

Thank you! Whenever you ready -> https://bimmer-remote.com/products/f...or-bmw-g80-g82

Order submitted, ill be in touch soon !

[infinite_creations25]

kubax86 Can the CS engine flash still be done on 03/2026.30?