BM3 v.2.2 - Traction Control Issues Thread

leew102 · 02-20-2022, 09:09 PM

Quote:

Originally Posted by Wires

Quote:

Originally Posted by leew102

Same thing happened to me. It happens a lot in 1st gear pulls off an on ramp, and then it surges like anti lag.

It's like it's preemptively thinking you might spin, so it kicks in. I had it in 2nd gear as well.

Did you get an yellow traction control flickering lights when it happens? I didn't, which is leading me to believe it didn't actual lose grip even though it kicks into this mode.

Nope never. Dry road, full traction. Kinda exactly like you described. It's preemptively engaging thinking it's going to lose traction in situation where you wont lose traction. Sometimes is scary though when you need to merge quick from an on ramp onto the highway. Especially down here in NYC/CT area where your gaps to merge onto the highway are tight sometimes.

leew102 · 02-21-2022, 11:15 AM

Quote:

Originally Posted by leew102

Quote:

Originally Posted by Wires

Quote:

Originally Posted by leew102

Same thing happened to me. It happens a lot in 1st gear pulls off an on ramp, and then it surges like anti lag.

It's like it's preemptively thinking you might spin, so it kicks in. I had it in 2nd gear as well.

Did you get an yellow traction control flickering lights when it happens? I didn't, which is leading me to believe it didn't actual lose grip even though it kicks into this mode.

Nope never. Dry road, full traction. Kinda exactly like you described. It's preemptively engaging thinking it's going to lose traction in situation where you wont lose traction. Sometimes is scary though when you need to merge quick from an on ramp onto the highway. Especially down here in NYC/CT area where your gaps to merge onto the highway are tight sometimes.

Also will add, when this anti lag/tc control thing happens, after it surges, rpm continue to climb for a second even after lifting off the gas completely. I think there was a user who posted about the car accelerating even after lifting off the gas with BM3. I do feel like it happens more in d/comfort mode too.

Wires · 02-21-2022, 12:56 PM

Quote:

Originally Posted by leew102

Also will add, when this anti lag/tc control thing happens, after it surges, rpm continue to climb for a second even after lifting off the gas completely. I think there was a user who posted about the car accelerating even after lifting off the gas with BM3. I do feel like it happens more in d/comfort mode too.

That is actually just part of the BMW design. Revs climb slightly after getting off the gas (it's pretty short though, sub-1 second).

CrimsonMoonLight72 · 02-28-2022, 08:57 AM

Quote:

Originally Posted by Wires

That is actually just part of the BMW design. Revs climb slightly after getting off the gas (it's pretty short though, sub-1 second).

So I’m assuming most are still up in the air about the v2.3 maps? I’m still a bit hesitant to flash it. Still staying at v2.1 stage 1 93....I wish I had access to v2.1 stage 2 93 though as I have a high flow DP now. Maybe they will tweak v2.3 a bit?

Red-i · 02-28-2022, 10:09 AM

Quote:

Originally Posted by CrimsonMoonLight72

Quote:

Originally Posted by Wires

That is actually just part of the BMW design. Revs climb slightly after getting off the gas (it's pretty short though, sub-1 second).

So I’m assuming most are still up in the air about the v2.3 maps? I’m still a bit hesitant to flash it. Still staying at v2.1 stage 1 93....I wish I had access to v2.1 stage 2 93 though as I have a high flow DP now. Maybe they will tweak v2.3 a bit?

Maybe it's not perfect but tc works for me. Safer than when it was almost never coming on

leew102 · 02-28-2022, 11:12 AM

I did reflash stage 2+ a couple times and then reset adaptations which left a persistent drivetrain error. So did a final reflash of stg 2+ and did a reflash of xHP and it seems to behave better now.

dmanb2b · 02-28-2022, 11:37 AM

Quote:

Originally Posted by CrimsonMoonLight72

So I’m assuming most are still up in the air about the v2.3 maps? I’m still a bit hesitant to flash it. Still staying at v2.1 stage 1 93....I wish I had access to v2.1 stage 2 93 though as I have a high flow DP now. Maybe they will tweak v2.3 a bit?

Isn't 2.4 out or am I losing my mind?

CrimsonMoonLight72 · 02-28-2022, 02:38 PM

Quote:

Originally Posted by dmanb2b

Isn't 2.4 out or am I losing my mind?

Ink...haven’t logged in for awhile
I hope it is

Wires · 02-28-2022, 04:23 PM

Quote:

Originally Posted by dmanb2b

Isn't 2.4 out or am I losing my mind?

Couple of them are at 2.4 (Ethanol maps, some 1.0 maps) but not all.

Wires · 02-28-2022, 04:24 PM

Quote:

Originally Posted by CrimsonMoonLight72

So I’m assuming most are still up in the air about the v2.3 maps? I’m still a bit hesitant to flash it. Still staying at v2.1 stage 1 93....I wish I had access to v2.1 stage 2 93 though as I have a high flow DP now. Maybe they will tweak v2.3 a bit?

They work for me, it's just a couple of those quirks that would be nice to go away. I'd have no issues recommending those maps. It takes care of the car spinning which was the main reason for them.

F36Imani · 03-03-2022, 01:27 AM

Does anyone have any info if they are in the process of releasing another update soon for the stage 1 91 octane? Like a polished 2.4 map?…

Wires · 06-10-2022, 12:29 PM

I've logged a bunch of miles on the v2.3 version. For the most part, power delivery is spot on.

I did find that the invasive torque management when cornering on winter tires must have been slight wheel slip. Since the temps are warmer, and I have summer tires back on, it's only showed up when raining.

Wouldn't mind it to be a bit more polished on the torque management, but tolerable during those situations.

02-28-2022, 11:12 AM	#138
leew102 Private First Class 83 Rep 163 Posts Drives: F30 BMW 340i xdrive Join Date: Jul 2020 Location: NY iTrader: (0)	I did reflash stage 2+ a couple times and then reset adaptations which left a persistent drivetrain error. So did a final reflash of stg 2+ and did a reflash of xHP and it seems to behave better now.
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03-03-2022, 01:27 AM	#143
F36Imani F36 440i Gran coupe 21 Rep 81 Posts Drives: 440i Gran coupe F36 Join Date: Nov 2015 Location: Austin, Texas iTrader: (0)	Does anyone have any info if they are in the process of releasing another update soon for the stage 1 91 octane? Like a polished 2.4 map?…
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06-10-2022, 12:29 PM	#144
Wires Brigadier General 1646 Rep 4,876 Posts Drives: 2016 340i xDrive Join Date: Apr 2008 Location: Calgary iTrader: (0)	I've logged a bunch of miles on the v2.3 version. For the most part, power delivery is spot on. I did find that the invasive torque management when cornering on winter tires must have been slight wheel slip. Since the temps are warmer, and I have summer tires back on, it's only showed up when raining. Wouldn't mind it to be a bit more polished on the torque management, but tolerable during those situations.
	Appreciate 0 Quote