Reading the ECM and Gearbox

Twinspark

Member
Messages
460
I've heard the original firmware is much more aggressive, very interesting to see how that feels like.
 

Twinspark

Member
Messages
460
I had it on my 4200. Great stuff

C
How does it compare against the DBW?

On an unrelated note, I really think Maserati should've went more all out on the GS. The more aggressive gearbox mapping on the original, the quicker rack from the MCV and maybe a few aluminium panels to shed off some weight. The design is there, especially the interior, but the jump wasn't all that drastic which is a shame.
 

Twinspark

Member
Messages
460
Never drove a DBW but I doubt it's anywhere close

C
I've never actually driven a standard(i.e. non-DBW) car, so I can't really tell whether the product is effective is good or not but I can definitely feel when the clutch bites and engages, I've heard the standard car likes to ride out the clutch way too much.
 

CatmanV2

Member
Messages
48,546
I've never actually driven a standard(i.e. non-DBW) car, so I can't really tell whether the product is effective is good or not but I can definitely feel when the clutch bites and engages, I've heard the standard car likes to ride out the clutch way too much.

That seems unlikely and perhaps more to do with bad adjustment. Mine surely didn't......

C
 

tulit

Member
Messages
110
Yes what you’re describing usually happens when the PIS isn’t set right or the wear index isn’t set right.


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lambertius

Banned
Messages
341
I've never actually driven a standard(i.e. non-DBW) car, so I can't really tell whether the product is effective is good or not but I can definitely feel when the clutch bites and engages, I've heard the standard car likes to ride out the clutch way too much.

The DBW has a defeat switch, you can turn it off.

If you ask on the other forum, the DBW is crack cocaine and the GOAT. I've seen plenty of people claim otherwise though.

The other things that can affect the clutch biting too hard are a cooked or uneven flywheel, and a cheap or rebuilt clutch.
 

tulit

Member
Messages
110
Just steering back a bit on topic, a little further progress today.

I was able to get the polling rates up significantly to get several updates per second.

I’m also now looking at monitoring/alerting. This first bit looks at how the F1 pump and system is performing.

This uses the pump relay state to measure two things:

1) Cycle time between pump activations. Too low of a time points to leakage/bleed off.

2) Pump on time. How long it takes the pump to raise the pressure from 40 bar to 50 bar. Again too long of a time here indicates a weak pump or heavy leakage.

3) Additionally I’ve added alerting to the clutch solenoid measure when they exceed 60cc/min.

The M3Stack has a small speaker so a alarm tone can be played.

With all these we can get some early warnings of failures or issues that need addressing.

Any other suggestions for monitoring?

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lambertius

Banned
Messages
341
Yeah, a comparison between the max/min positions for the gear actuator. If you want to track the wear of the actuator, you need to track the change in the value over time. The TCU overwrites the values every time you do a self learn, so unless you manually track it you can't know if it is drifting.