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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 02-24-2016, 03:02 AM   #1
daniel_f.
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Tune Wiki- How to configure/use Launch Control

Heres an instruction on how to configure Launch Control (LC) at MS43 and use them:

1. Download the corresponding files in the google drive within the folder "Launch Control". Choose the one that matches your engine displacement. Also download xdf with LC in the description.

2. Flash the file with JMG

3. LC is preconfigured in TunerPro to have a bit of security. If you feel you need to tweak the settings download the tune with Galletto and open it in TunerPro.

4. Under "Special Functions: Launch Control" you can tweak the shown values. Description is available by hovering the mouse over each setting.



5. Save the bin and upload it using Galletto


Using LC

1. Make shure coolant temp is equal or above the treshold

2. Depress the clutch pedal

3. Choose first gear

4. Floor the accelerator pedal! (At least that PVS matches the treshold!)

5. Engine speed should bounce at choosen rpm setpoint. There may be offset which engine speed bounces, like +/- 200rpm

6. Release clutch pedal while holding accelerator pedal down.

7. Engine speed will be reduced until vehicle speed exceeds choosen treshold

This feature, LC, wont make you a professional driver and it wont make your car a sports car! If the settings are tweaked to your cars drivetrain and your skills it can definately enhance your cars performance.

Warning:

If the engine does continue to increase rpm even with tweaked settings, you have one of very few weired DMEs that we need to investigate further!
Check youtube for reference how its intended to work!

Development of LC is still going on so check back for the latest updates available!
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Old 02-26-2016, 08:37 AM   #2
thecos
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This is cool. I haven't flashed it yet but am willing to try it.

Once you flash LC will it always be active or is there some kind of activation sequence?
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Old 02-26-2016, 09:03 AM   #3
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Quote:
Originally Posted by thecos View Post
This is cool. I haven't flashed it yet but am willing to try it.

Once you flash LC will it always be active or is there some kind of activation sequence?
Its stated above your post
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Old 02-27-2016, 12:05 PM   #4
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I tried this yesterday. Made sure to drive around for about half an hour to ensure everything was up to operating temps, and then stopped in an isolated area. Clutch in, shifted to first and then matted the throttle. The engine caught at the RPM I set (2500) but then kept going past that point. Any ideas?
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Old 03-11-2016, 01:06 PM   #5
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is this not possible on MS42?
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Old 03-11-2016, 01:24 PM   #6
daniel_f.
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Originally Posted by Elvin123 View Post
is this not possible on MS42?
It may be done when i find a perfectly working solution.
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Old 03-11-2016, 10:05 PM   #7
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This is exciting
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Old 05-17-2016, 11:45 PM   #8
diablorojo
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Daniel, can you quickly explain what each parameter is (PVS, Launch hysteresis, launch_tco_min, launch_vs_max)

Also, any suggestions for mph?

My boost is early so I'm looking at setting 2800 rpms but a little unclear on the MPH. I have lots of torque so im thinking the single digit mphs would still cause a lot of wheel spin ending the LC too early.

thanks...
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Old 05-18-2016, 12:46 AM   #9
daniel_f.
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Quote:
Originally Posted by diablorojo View Post
Daniel, can you quickly explain what each parameter is (PVS, Launch hysteresis, launch_tco_min, launch_vs_max)

Also, any suggestions for mph?

My boost is early so I'm looking at setting 2800 rpms but a little unclear on the MPH. I have lots of torque so im thinking the single digit mphs would still cause a lot of wheel spin ending the LC too early.

thanks...

Using LC

1. Make sure coolant temp is equal or above the threshold
2. Depress the clutch pedal
3. Choose first gear
4. Floor the accelerator pedal! (At least that PVS matches the threshold!)
5. Engine speed should bounce at chosen rpm setpoint. There may be offset which engine speed bounces, like +/- 200rpm
6. Release clutch pedal while holding accelerator pedal down.
7. Engine speed will be reduced until vehicle speed exceeds chosen threshold

From the wiki
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Old 05-18-2016, 01:27 AM   #10
diablorojo
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Lol, I know how to activate it but to set the parameters I (and those of us less experienced) need to know what each of the tables set.

1. Launch TCO - is this the target cooling temp?
2. Launch RPM MAX - is this the actual set point for the RPM (not to exceed and hold steady at XXXXX)?
3. Launch Hythersis - ?
4. Lauch vs Max - this is the MPH the car must reach before LC disengages?
5. Launch PVS - ?
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Old 05-18-2016, 03:55 AM   #11
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Quote:
Originally Posted by diablorojo View Post
Lol, I know how to activate it but to set the parameters I (and those of us less experienced) need to know what each of the tables set.
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Old 05-18-2016, 11:08 AM   #12
diablorojo
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Didnt mean to be confusing. Lol

What is Launch Hythersis and Launch PVS - ?
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Old 05-18-2016, 11:29 AM   #13
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The launch hysteresis is basically how much the DME will let the revs drop before bringing them back up to the target. Based on daniel's instructions above, my guess is Launch PVS will be the minimum throttle position necessary to trigger launch control.
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Old 05-18-2016, 03:23 PM   #14
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Funny enough, my XDF doesn't have the Launch Hysteresis parameter; is that a new feature?
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Old 05-18-2016, 04:23 PM   #15
daniel_f.
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Quote:
Originally Posted by AndreBXP View Post
Funny enough, my XDF doesn't have the Launch Hysteresis parameter; is that a new feature?
Nope, its not used
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Old 05-19-2016, 09:12 AM   #16
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Thanks guys!!
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Old 05-24-2016, 03:00 PM   #17
ReneBMW
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How about the no-lift-shift feature, is it working and activated?
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Old 05-25-2016, 01:56 AM   #18
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Not implemented yet. ISAdelete is on priority right now
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Old 06-30-2016, 03:08 PM   #19
Georg
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nice work guys
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Old 10-21-2016, 07:55 PM   #20
44chris
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Quote:
Originally Posted by daniel_f. View Post
Nope, its not used
What does that mean? I also dont have the hysteris in my xdf.. is there any way how i can get it?
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