CSL SMG Engine Parameters (DME)

[SliM3]

M-GEARBOX II_MOTOR INERTIA
- Search your current tune for the first 5 byte string (03 00 03 08 14)
- Copy complete hex and overwrite your tune

03 00 03 08 14 78 8C F0

M-GEARBOX II_MOTOR INERTIA - STANDARD E46 SMG

03 00 03 08 14 50 64 C8

[SliM3]

MAIN PROGRAMMING - CSL SMG (DME)
- Search your current tune for the first 16 byte string (08 06 0A 14 1E 28 32 3C 50 64 26 32 58 71 8A A3)
- Copy complete hex and overwrite your tune

08 06 0A 14 1E 28 32 3C 50 64 26 32 58 71 8A A3 04 03 01 01 01 01 02 02 04 03 01 01 01 01 02 02 04 03 02 01 02 02 02 02 05 04 02 02 02 02 02 02 05 04 03 02 02 02 02 02 05 04 03 02 02 02 02 02 08 06 0A 14 1E 28 32 3C 50 64 26 32 58 71 8A A3 0A 07 05 04 04 04 04 04 0A 07 05 04 04 04 04 05 0A 08 06 05 05 06 08 09 0A 09 08 07 07 08 09 0A 0A 09 09 08 09 09 0A 0B 0A 0A 0A 0A 0A 0B 0B 0C 08 06 0A 14 1E 28 32 3C 5A 64 26 32 58 71 8A A3 01 02 03 05 05 06 08 08 02 03 03 05 05 06 08 08 03 04 04 05 05 06 09 08 03 04 05 06 06 07 09 09 04 05 06 07 08 09 0A 0A 05 06 07 08 09 09 0A 0B 08 06 0A 14 1E 28 32 3C 5A 64 26 32 55 8A 96 A3 02 05 05 06 07 08 09 0A 04 06 06 07 07 08 09 0A 06 06 08 09 09 0A 0A 0A 08 08 09 09 0A 0A 0B 0B 08 08 0A 0A 0A 0B 0B 0D 09 0A 0A 0A 0B 0B 0B 0E 08 06 0A 14 1E 28 32 3C 50 64 19 37 55 69 82 A3 01 01 01 02 02 02 03 03 01 02 02 02 02 03 03 03 03 02 02 02 03 03 03 04 03 03 02 03 03 04 04 05 03 03 03 03 03 04 05 05 03 04 04 04 04 04 05 05 08 06 0A 19 28 37 46 50 5A 64 19 37 55 69 82 A3 03 04 04 06 07 06 06 06 05 07 07 08 09 08 07 07 08 08 0A 0A 0B 0A 0A 0A 0A 0A 0A 0B 0B 0B 0A 0A 0A 0A 0B 0B 0B 0B 0B 0C 0A 0A 0B 0B 0B 0B 0C 0C 04 06 0A 1E 3C 64 26 32 58 71 8A A3 03 04 06 08 03 04 07 08 05 06 07 07 05 06 07 07 05 06 07 06 05 06 07 06 04 06 0A 1E 3C 64 26 32 58 71 8A A3 08 09 0A 0B 08 09 09 0A 08 08 09 09 07 08 08 09 07 07 08 08 07 07 07 08 04 06 0A 1E 3C 64 26 32 58 71 8A A3 02 03 03 03 02 03 03 03 02 03 03 04 03 03 04 05 03 04 05 07 04 05 07 08 04 06 0A 1E 3C 64 26 32 58 71 8A A3 06 07 08 08 07 08 08 09 09 08 09 0A 09 09 0A 0A 09 0A 0A 0B 0A 0A 0B 0C 04 06 00 05 1E 64 19 37 55 73 91 AF 06 04 02 01 08 06 03 02 08 06 04 03 0A 08 06 04 0A 08 06 04 0C 0A 08 06 04 06 00 05 1E 64 19 37 55 73 91 AF 08 06 05 03 0A 08 07 04 0B 0A 09 06 0B 0B 0A 08 0C 0C 0B 0A 0C 0C 0C 0B 0C 05 01 02 03 04 05 06 07 08 09 0A 0B 0C 01 02 03 04 05 79 58 45 36 2E 27 21 1C 18 18 18 0A 6D 4F 3E 2F 27 21 1C 18 18 18 18 0A 65 48 38 29 21 1C 18 17 16 15 14 0F 5E 42 32 24 1D 18 15 13 12 11 10 10 57 3C 2D 20 1A 16 14 13 12 12 12 12 00 0C 05 01 02 03 04 05 06 07 08 09 0A 0B 0C 01 02 03 04 05 6E 5A 4B 41 37 2D 23 1A 14 0E 0B 05 69 55 46 3C 32 2D 23 18 10 0A 09 08 69 50 41 37 2F 2D 21 18 14 0E 0B 0A 64 4B 3C 37 2F 2D 21 18 12 10 0D 0C 64 4B 3C 37 2F 2D 21 18 12 10 0F 0E 00 06 06 04 06 08 0A 0B 0C 03 05 07 09 0A 0B 04 04 05 07 08 0A 04 04 06 07 08 0A 04 05 06 07 08 0B 04 06 07 07 09 0D 05 06 07 0C 0E 0E 06 07 08 0C 0F 0F 04 06 0A 19 28 3C 19 32 4B 64 7D 96 1A 40 5A 80 00 1A 33 66 00 1A 33 4D 00 1A 33 4D 00 1A 33 4D 00 1A 33 4D 04 06 0A 19 28 3C 19 32 4B 64 7D 96 1A 40 5A 80 00 0D 24 66 00 0D 24 40 00 0D 24 40 00 0D 24 40 00 0D 24 40 03 03 00 64 03 E8 07 D0 00 00 01 2C 04 B0 01 F4 02 58 03 20 03 20 03 E8 04 B0 06 A4 07 D0 09 C4 03 03 14 55 5A 01 03 06 09 12 17 0A 14 1B 0D 19 1E 00

MAIN PROGRAMMING - STANDARD E46 SMG (DME)

08 06 0A 14 1E 28 32 3C 50 64 26 32 58 71 8A A3 0A 07 05 04 04 04 04 04 0A 07 05 04 04 04 04 05 0A 08 06 05 05 06 08 09 0A 09 08 07 07 08 09 0A 0A 09 09 08 09 09 0A 0B 0A 0A 0A 0A 0A 0B 0B 0C 08 06 0A 14 1E 28 32 3C 5A 64 26 32 58 71 8A A3 01 02 03 04 04 05 06 06 02 03 03 04 04 05 06 06 03 03 03 04 04 05 07 08 03 04 04 05 05 07 09 09 04 04 04 05 06 09 0A 0A 04 05 05 06 08 09 0A 0B 08 06 0A 14 1E 28 32 3C 5A 64 26 32 55 8A 96 A3 02 04 04 04 06 07 07 07 03 04 04 04 06 07 07 07 05 06 06 07 07 08 09 0A 06 07 07 08 09 0A 0B 0B 06 07 07 08 0A 0B 0B 0D 06 07 08 09 0A 0B 0B 0E 08 06 0A 14 1E 28 32 3C 50 64 19 37 55 69 82 A3 01 01 01 02 02 02 03 04 01 02 02 02 02 03 03 04 03 02 02 02 03 03 03 04 03 03 02 03 03 04 04 05 03 03 03 03 03 04 05 05 03 04 04 04 04 04 05 05 08 06 0A 19 28 37 46 50 5A 64 19 37 55 69 82 A3 02 02 03 03 03 04 04 06 02 03 03 04 04 06 06 08 03 04 05 06 06 08 08 0A 04 05 06 08 0A 0A 0B 0B 06 07 07 09 0A 0B 0B 0B 06 07 09 0A 0B 0B 0C 0C 04 06 0A 1E 3C 64 26 32 58 71 8A A3 03 04 06 08 03 04 07 08 05 06 07 07 05 06 07 07 05 06 07 06 05 06 07 06 04 06 0A 1E 3C 64 26 32 58 71 8A A3 08 09 0A 0B 08 09 09 0A 08 08 09 09 07 08 08 09 07 07 08 08 07 07 07 08 04 06 0A 1E 3C 64 26 32 58 71 8A A3 02 03 03 03 02 03 03 03 02 03 03 04 03 03 04 05 03 04 05 07 04 05 07 08 04 06 0A 1E 3C 64 26 32 58 71 8A A3 04 07 08 08 06 07 08 09 07 08 09 0A 08 09 0A 0A 09 0A 0A 0B 0A 0A 0B 0B 04 06 00 05 1E 64 19 37 55 73 91 AF 04 01 01 01 05 02 01 01 06 03 02 01 06 03 02 02 07 03 03 02 07 03 03 02 04 06 00 05 1E 64 19 37 55 73 91 AF 06 04 03 01 08 04 03 01 09 06 07 04 09 08 08 06 0A 09 09 06 0A 09 09 07 0C 05 01 02 03 04 05 06 07 08 09 0A 0B 0C 01 02 03 04 05 79 58 45 36 2E 27 21 1C 18 18 18 0A 6D 4F 3E 2F 27 21 1C 18 18 18 18 0A 65 48 38 29 21 1C 18 17 16 15 14 0F 5E 42 32 24 1D 18 15 13 12 11 10 10 57 3C 2D 20 1A 16 14 13 12 12 12 12 00 0C 05 01 02 03 04 05 06 07 08 09 0A 0B 0C 01 02 03 04 05 C8 82 6E 5A 4B 3C 2D 21 1A 13 0E 05 C8 82 69 55 46 37 2D 1E 17 10 0A 08 C3 7D 69 50 41 32 2D 21 17 13 0E 0A BE 78 64 4B 3C 32 2D 24 1A 14 10 0C BE 78 64 4B 3C 32 2D 26 1D 15 11 0E 00 06 06 04 06 08 0A 0B 0C 03 05 07 09 0A 0B 04 04 05 07 08 0A 04 04 06 07 08 0A 04 05 06 07 08 0B 04 06 07 07 09 0D 05 06 07 0C 0E 0E 06 07 08 0C 0F 0F 04 06 00 14 1E 28 19 32 4B 64 7D 96 80 80 73 80 80 73 66 66 73 66 4D 5A 66 5A 40 4D 60 4D 40 4D 5A 4D 40 4D 04 06 00 14 1E 28 19 32 4B 64 7D 96 80 66 5A 80 66 5A 40 80 5A 4D 40 80 4D 40 4D 80 46 33 4D 80 40 33 4D 80 03 03 00 64 03 E8 07 D0 00 00 01 2C 04 B0 01 F4 02 58 03 20 03 20 03 E8 04 B0 06 A4 07 D0 09 C4 03 03 14 55 5A 01 03 06 09 12 17 0A 14 1B 0D 19 1E 00 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

[SliM3]

Just a little background for those that aren't too savvy with SMG functionality, the above SW re-flash is designed to take advantage of the more aggressive and faster CSL SMG controller shift logic.

Since gear shifts are a timed synchronous event between both DME and SMG controller, to really take advantage of true CSL shifting we need to address the engine controlled portion of the event. What we end up with is around 18 maps that need to be snatched from the CSL engine SW, overwriting your current maps.

First are the up-shift recognition maps that establish values based on driver demand torque (you pressing the gas) & engine speed for both Comfort and Sport modes. There's one each for regulated speed control, gear change, and full turn-on (torque ramp) for a total of six.

The next set of maps are for downshifting, with their values based on deceleration rate (fps) and engine speed. Total
of six as well.






The next, more important set of maps, control the actual timing of engine speed regulation and torque ramp-up based on the recognition maps above. These also work in conjunction with the faster SMG controller logic to really shorten that timed synchronous shift event. To put it in perspective, shift logic '3' on this set-up feels more like shift logic '5' on normal ///M's.

Of note, eng. speed regulation is the same between normal ///M's and the CSL, however the torque ramp-up time is considerably shortened, nearly cut in half in some areas.

CSL



NORMAL RAMP-UP





These maps took a bit of figuring out but they are the ever-so-popular rev-match parameters. They serve as an applied percentage to target engine speed based on deceleration rate (fps) and current rpm. As you can see the normal maps top out around 60% applied engine speed, while the CSL tops out @ 100% applied engine speed. Also, the target engine speed threshold is referenced via a 3x0 function map with 400, 500 & 1000 rpm values.

CSL
Note: My Sport map is modified but normally both these maps are identical.




NORMAL ///M




KL_SMG_MOT_J_MOTOR:

What is it?
It's the Mass Moment of Inertia at various engine speeds, in newtons divided by meters per second squared.


Why do we need it?
It quantifies the required torque needed to change angular velocity of pretty much the entire drive line, from the flywheel to the rear wheels.


How is it used in calculation?
It is multiplied by the speed gradient (angular velocity) of the engine, which is rpm/sec -or- radians a second.

So for instance, let's say our speed gradient is 550 rpm/sec (31,625 degree's crank rotation; 87 revolutions per second; 5270rpm) When we apply a mass moment of 0.27 <--(S54 standard value) we come up with the following: 550 * 0.27 = 148.5 Nm required to change angular velocity. There are other values that are added as well that account for drag torque & consumer torque (AC compressor, alternator, H2O pump, etc.).


SEQUENTIAL M-GEARBOX II_MOTOR INERTIA



The above pic shows the difference between standard & euro ///M's, and the CSL. As you can see, after about 3200 rpm the value drops considerably while the CSL is still climbing. So let's quantify the effects of the differences by using the math formula above.

CSL:
1520 = 17.38 Nm
3000 = 125.22 Nm
6000 = 313 Nm

Standard and Euro:
1520 = 3.17 Nm
3520 = 73.46 Nm
5000 = 62.61 Nm