7 year review of my SMG (from clunk to no clunk)

[992gnt]

This is great info, thank you for sharing. My SMG doesn't have any symptoms or issues of concern at this point and I've only done the 40mph + Neutral + press both paddles for 8-10secs. Is there any risk of running thru the bleeding procedure and reset of adaptations on an SMG system that seems to be running normal? If any of the procedures fail can you end up with a non-functioning SMG?

This is what happened to me, I ran full adaptations with no real symptoms to correct, the routine failed, and I got the cog of death. A used GPS sensor followed by a new GPS sensor and multiple times on the lift removing everything under the car, I finally got the adaptations to complete successfully.

If it's your daily, I wouldn't recommend running adaptations unless you have some time and money to throw at it just in case.

[Irhase46m3]

Thanks. I bled it as part of the INPA routine, trying to resolve another SMG fault. The pump all related hardware is in the stock location, but it always squeaks at me when it's bleeding.

During what part of the bleed/adaptation process does the squeak occur? Are you think that the squeak sound is caused by air? Or do you actually see bubbles escaping in the reservoir?

[992gnt]

During what part of the bleed/adaptation process does the squeak occur? Are you think that the squeak sound is caused by air? Or do you actually see bubbles escaping in the reservoir?

Each time it says it's bleeding the system, at the end of the cycle it sounds like air escaping. I've never looked in the reservoir to see if there is air escaping. I've also never tried to locate the source of the noise.

[Irhase46m3]

Each time it says it's bleeding the system, at the end of the cycle it sounds like air escaping. I've never looked in the reservoir to see if there is air escaping. I've also never tried to locate the source of the noise.

Hehe. That is normal sound as you bleed, the only way to see if there are any air in the system is by opening the reservoir. I want to say that the "air noise" you are referring to sounds like a whistle and its fluid moving through the lines. If you had air in the system you will hear more of a grinding noise.

There is nothing wrong with bleeding the system and having the cap off the reservoir.

Hope this helps!

[992gnt]

Hehe. That is normal sound as you bleed, the only way to see if there are any air in the system is by opening the reservoir. I want to say that the "air noise" you are referring to sounds like a whistle and its fluid moving through the lines. If you had air in the system you will hear more of a grinding noise.

There is nothing wrong with bleeding the system and having the cap off the reservoir.

Hope this helps!

Ah, great! Thanks for the diagnosis!

[robgill]

Hey Irhase46m3 , thx for the post. Very timely for me, I have just finished relocating my pump with the BE kit and I'm in the process of bleeding. I have done a few successful bleeds with ISTA/D and will now do some more with the pump horizontal. Can you share more detail on why the ISTA/D bleed is different/worse than INPA? I gave up on INPA a few years ago and and haven't had any issue with ISTA/D. Primary reason I switched is I can run ISTA/D in Win 10. What OS are you running INPA in?

[Irhase46m3]

Hey Irhase46m3 , thx for the post. Very timely for me, I have just finished relocating my pump with the BE kit and I'm in the process of bleeding. I have done a few successful bleeds with ISTA/D and will now do some more with the pump horizontal. Can you share more detail on why the ISTA/D bleed is different/worse than INPA? I gave up on INPA a few years ago and and haven't had any issue with ISTA/D. Primary reason I switched is I can run ISTA/D in Win 10. What OS are you running INPA in?

This is a good question, both programs work and both bleed the system, ISTA/D is sequential bleed process that you have to manually run each step, INPA offers a more holistic approach, it does all the steps on its own and at the end asking you to press the break pedal (and hold) to start the car (ISTA/D never did this) - I believe (i have no facts to back me up on this other than how much smoother my car is shifting) that its within this step that makes the difference - Technically, both systems use the same data files so it should be the same.

Another thing to note is that ISTA/D puts more stress on the pump, for its bleed processes it always tries to prime the pump over and over for a period of a few seconds and lets air out before actually starting the bleed process (which is understandable) - INPA does this but its not way near as much as ISTA, its also worth mentioning that INPA works in reverse of ISTA, its bleed processes and adaptations are the exact reverse.

Since you are in the middle of this with ISTA/D, i invite you to test it out, perform the full bleed/adaptation with ISTA get all the air out, then try the adaptation with INPA.

Im currently running windows 7 x64bit and running version 5.0.6 of INPA.

Hope this helps!

[sapote]

Another thing that helped was bleeding my break system, for the longest time I had a tiny air bubble in the break system, bleeding and taking this air out helped with the shifting.

How does the air in brake affect the SMG shifting? It can affect your driving but I don't see the SMG connection.

[eacmen]

How does the air in brake affect the SMG shifting? It can affect your driving but I don't see the SMG connection.

concur. has no affect


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[Mspir3d]

I was able to get my adaptations to complete when it failed by driving the car until it was warm and then running the program.

[TramRam]

This is a good question, both programs work and both bleed the system, ISTA/D is sequential bleed process that you have to manually run each step, INPA offers a more holistic approach, it does all the steps on its own and at the end asking you to press the break pedal (and hold) to start the car (ISTA/D never did this) - I believe (i have no facts to back me up on this other than how much smoother my car is shifting) that its within this step that makes the difference - Technically, both systems use the same data files so it should be the same.
Hope this helps!

Irhase46m3 - I have INPA 5.0.6 on a Win10 64 bit that I downloaded from 'Mike's 1 Click' Having no one around me familiar with it to tell me if it's working correctly or not, I can only guess. I replaced my GPS and ran adaptations. In the end I did NOT see the note in your quote above asking me to do anything but it DID give me a red screen with a note 'break SMG2 installation procedure which I interpreted as the F10 'BREAK' key (Lwr Rgt Corner of the screen). Am I done or not? The car seems to drive pretty well except that with a laggy shift to 4th gear from 3rd OR 5th, Burkhart suggests that I need to check and replace my detente spring (behind the press in cap) I have it not but need to time to get to it. Am I on the right track with running my adaptations? Thanks in advance. TramRam

[Irhase46m3]

Irhase46m3 - I have INPA 5.0.6 on a Win10 64 bit that I downloaded from 'Mike's 1 Click' Having no one around me familiar with it to tell me if it's working correctly or not, I can only guess. I replaced my GPS and ran adaptations. In the end I did NOT see the note in your quote above asking me to do anything but it DID give me a red screen with a note 'break SMG2 installation procedure which I interpreted as the F10 'BREAK' key (Lwr Rgt Corner of the screen). Am I done or not? The car seems to drive pretty well except that with a laggy shift to 4th gear from 3rd OR 5th, Burkhart suggests that I need to check and replace my detente spring (behind the press in cap) I have it not but need to time to get to it. Am I on the right track with running my adaptations? Thanks in advance. TramRam

Hi There - in INPA, green = good, red = bad, its probably asking you to interrupt and break the procedure with F10 - I agree with burkhart, the delay is caused by either a broken spring or bad GPS both have similar symptoms but since you replaced the GPS (i assume with a new one) it should be the springs - What prompted you to replace the GPS? is it due to the delay in shifts? are you getting the yellow COG when you get the red screen in INPA? I assume that the bleeding procedures complete with the green screen followed by the printed "kein Fehler" (this means no error)

If you complete adapatation correctly, it will prompt you to start the engine (which you do) then it will tell you to hold the break pedal for 1-2 seconds then it will terminate with a green screen asking you to break and view the log files (which you should have a line that says "kein Fehler" (at least it does this on my germglish version of INPA)

I suggest replacing the spring before continuing with adaptations

Take a look at this thread, https://nam3forum.com/forums/forum/m...g-transmission

[E46m3zcp]

I am overall a happy SMG owner. I like it for everyday driving, but when driving hard I do not like the way it shifts.

If I am at WOT and shift past 6500 RPM there is a thud/clunk like if the car throws the transmission in gear or shifts before the clutch is fully disengaged. I don't know exactly what happens. It sometimes gets better if I release the throttle slightly while shifting. Other times though, this will confuse the smg system and the throttle input / clutch release gets out of sync and the clutch will slip. Very unpredictable and the result is I get the feeling I am beating the car up and driving it wrong.

Questions :
Who also experiences what I described? Who doesn't?
How can I make this behave better ?
Would a bleed help ? TTFS software ?


PFA

[oceansize]

[QUOTE=E46m3zcp;n51587
Questions :
Who also experiences what I described? Who doesn't?
How can I make this behave better ?
Would a bleed help ? TTFS software ?
[/QUOTE]

You don't need to bleed unless your hydraulic system has been opened.

You could run smg/clutch adaptations using INPA or DIS.

Depending on the mileage and wear you may need to refresh all, or some, of your rear end bushings (subframe, diff, sway bar, upper and lower control arm) and ball joints.

You should upgrade your SMG software using the following links, these are separate upgrades that provide the full CSL experience:

https://www.ecuworx.co.uk/how-to/upd...-255-software/

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

[E46m3zcp]

My car has 67k miles and was garage kept and the rubber looks good at inspection. Of course, it's 14 years old so it may be a bit dry or stiff. It wouldn't hurt to refresh it.

You should upgrade your SMG software using the following links

I am confused with all the options, inertia mod or not, CSL, TTFS, Build Journal, Kassel, ECU Worx. Are there differences between all these tunes or are they basically flashing the ECUs with the same software ?

About ECU Worx, I understood from your links that one set of instructions is for flashing the SMG ECU but I don't get how the second page flashes the DME to match the CSL SMG program. Is it a checkbox in one of the hidden tabs? But thanks, I will do some more research I think.

EDIT: I see it now, it's the CSL SMG Shifting / Rev Matching checkbox.