BM3 Stage 2 93 Map Too much torque triggering DCT error code, skipping gears.

MPOOR · 02-13-2019, 09:22 AM

Hey Guys
I had a three 20min track driving session, and it seems BM3 Stage 2 93 Oct map was too much for 4k mile driven DCT tranny.
It triggered drivetrain malfunctions during all three sessions.
DCT will cut power during on throttle 3rd Gear abruptly and then reconnect power
With a shifting shock. After that it will trigger code and skip gears . 1 3 5
THe car also had GTS tranny flash as well. On one session revert to stock tranny map.
Still happens after a couple lap.
Shall i use reduce boost by gear "feature to reduce some torque in 3rd gear ? Where it
Seems happens the most.

Fast4d · 02-13-2019, 12:01 PM

what tires are you using?

MPOOR · 02-13-2019, 10:23 PM

Quote:

Originally Posted by Fast4d

what tires are you using?

I was running my 18s without TPMS. This could be the only reason why DSC ABS fault occurs. Just ordered a set of TPMS for my 18s
Michelin Pilot Sports Cup 2

SeanWRT · 02-14-2019, 02:59 AM

If boost limit is the solution, don't just do it at 1st, 2nd and 3rd gear. You will need to limit it at all gears, because the torque at gearbox end is slightly higher at higher gear. It's the gear ratio that reduce the torque to the wheel.

MPOOR · 02-14-2019, 08:29 AM

Quote:

Originally Posted by SeanWRT

If boost limit is the solution, don't just do it at 1st, 2nd and 3rd gear. You will need to limit it at all gears, because the torque at gearbox end is slightly higher at higher gear. It's the gear ratio that reduce the torque to the wheel.

Hey Sean ~ Thank you for the input ~ I will look into it ~ Trying to get in touch
with PTF ~ Since they know this Map ~~

Simmadown115 · 02-14-2019, 09:12 AM

Put a ticket in the bootmod3 service and wait just a little bit for the BM3 gods to solve your problem.

You probably didn't have the GTS flashed correctly, they will find the pesky bug, destroy it, high five, and then you will be another happy BM3 member!

Jeff@TopGearSolutions · 02-14-2019, 10:45 AM

Quote:

Originally Posted by Simmadown115

Put a ticket in the bootmod3 service and wait just a little bit for the BM3 gods to solve your problem.

You probably didn't have the GTS flashed correctly, they will find the pesky bug, destroy it, high five, and then you will be another happy BM3 member!

+1 BM3 support. It's their for a reason.

mike@x-ph.com · 02-14-2019, 08:07 PM

Let us know how it goes OP

MPOOR · 02-15-2019, 03:51 AM

Quote:

Originally Posted by Simmadown115

Put a ticket in the bootmod3 service and wait just a little bit for the BM3 gods to solve your problem.

You probably didn't have the GTS flashed correctly, they will find the pesky bug, destroy it, high five, and then you will be another happy BM3 member!

Quote:

Originally Posted by Jeff@TopGearSolutions

+1 BM3 support. It's their for a reason.

Quote:

Originally Posted by mike@x-ph.com

Let us know how it goes OP

Definitely. Also reviewing the onboard camera, this drivetrain thump is only happening in a certain condition. In this case on a corner exit accelerating out. Can this be related to differential? Since we are talking BM3 Stage 2 93 octane torque here.

corbs09 · 02-15-2019, 09:43 AM

I would check your differential bushings

Mmvic · 02-15-2019, 10:43 AM

reflash gts again. I had similar issue... this time don't only wait 20 sec to start car after flash, wait till fully asleep ( when hazard and door lock buttons turn off) mine took about 10 minutes....

MPOOR · 02-15-2019, 08:34 PM

Quote:

Originally Posted by corbs09

I would check your differential bushings

Sounds good ~!!! I will have my shop take a look at it.
In this case both front and rear diff mount bushings correct?

MPOOR · 02-15-2019, 08:35 PM

Quote:

Originally Posted by Mmvic

reflash gts again. I had similar issue... this time don't only wait 20 sec to start car after flash, wait till fully asleep ( when hazard and door lock buttons turn off) mine took about 10 minutes....

I see ~~!! I will let is sleep for 10minutes as well ~

02-13-2019, 09:22 AM	#1
MPOOR First Lieutenant 96 Rep 374 Posts Drives: F80 M3 / WHITE Join Date: Sep 2012 Location: S.F bay area iTrader: (0)	BM3 Stage 2 93 Map Too much torque triggering DCT error code, skipping gears. Hey Guys I had a three 20min track driving session, and it seems BM3 Stage 2 93 Oct map was too much for 4k mile driven DCT tranny. It triggered drivetrain malfunctions during all three sessions. DCT will cut power during on throttle 3rd Gear abruptly and then reconnect power With a shifting shock. After that it will trigger code and skip gears . 1 3 5 THe car also had GTS tranny flash as well. On one session revert to stock tranny map. Still happens after a couple lap. Shall i use reduce boost by gear "feature to reduce some torque in 3rd gear ? Where it Seems happens the most. Attached Images __________________ What shall i buy for my next track toy Last edited by MPOOR; 02-13-2019 at 10:40 PM..
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02-13-2019, 12:01 PM	#2
Fast4d Captain 267 Rep 885 Posts Drives: 325 Join Date: Jan 2012 Location: So cal iTrader: (0)	what tires are you using? __________________ SAFE-GUARD tire/wheel/windshield/paint protection is a FRAUD! do not waste your money!
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02-14-2019, 02:59 AM	#4
SeanWRT Colonel 3179 Rep 2,577 Posts Drives: E90 M3 & F87 M2 Join Date: Sep 2015 Location: Shanghai iTrader: (1)	If boost limit is the solution, don't just do it at 1st, 2nd and 3rd gear. You will need to limit it at all gears, because the torque at gearbox end is slightly higher at higher gear. It's the gear ratio that reduce the torque to the wheel. __________________ Lemania 2320
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02-14-2019, 09:12 AM	#6
Simmadown115 First Lieutenant 66 Rep 395 Posts Drives: Her:14 ESII 335iM /Me:15 SS M3 Join Date: Feb 2012 Location: Salem, NH iTrader: (1)	Put a ticket in the bootmod3 service and wait just a little bit for the BM3 gods to solve your problem. You probably didn't have the GTS flashed correctly, they will find the pesky bug, destroy it, high five, and then you will be another happy BM3 member!
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02-14-2019, 08:07 PM	#8
mike@x-ph.com BimmerPost Supporting Vendor 24199 Rep 190,807 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Let us know how it goes OP __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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02-15-2019, 09:43 AM	#10
corbs09 Lieutenant 355 Rep 478 Posts Drives: 09 335i Join Date: Jul 2013 Location: Dallas iTrader: (1)	I would check your differential bushings
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02-15-2019, 10:43 AM	#11
Mmvic Private First Class 61 Rep 150 Posts Drives: M3 Join Date: Oct 2018 Location: Palm city fl iTrader: (0)	reflash gts again. I had similar issue... this time don't only wait 20 sec to start car after flash, wait till fully asleep ( when hazard and door lock buttons turn off) mine took about 10 minutes....
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