DCT owners need your help!! Is this slip???! - BMW 3-Series (E90 E92) Forum

mdyates · 01-22-2013, 11:36 PM

900 miles on my 335IS. Just added JB4 and it is running great until today.. Seems to be slipping at anything over 15psi. Does the DCT break in and grab harder at the 1200 mi mark? Here is a vid:

http://youtu.be/n4o3ADp1l20

a7med606 · 01-23-2013, 07:19 AM

you got a message on the idrive that says transmition mode failure ?

if yes it might be warmed up and you have to stop for cooling

if u are unlucky thats slip and i hope its not

BEAR-AvHistory · 01-23-2013, 07:25 AM

Not a good plan to be pushing the car with a JB4 before its finished its factory set break-in. The factory software limits boost till just over 1200 miles & you are over riding the program.

I put my JB4 in at 1400 miles & have not had any issues @ 16.5 psi.

David1 · 01-23-2013, 10:58 AM

There is no boost limit during the break in period. Only launch control is limited till you get to 1200 miles. There is no DCT break in as it is a wet clutch.

BuraQ · 01-23-2013, 11:37 AM

Quote:

Originally Posted by mdyates

900 miles on my 335IS. Just added JB4 and it is running great until today.. Seems to be slipping at anything over 15psi. Does the DCT break in and grab harder at the 1200 mi mark? Here is a vid:

Break in period on your IS is 1300 miles. The DCT has not fully adapted yet so of course your going to get slippage and a TM error obvioulsy due to overheating from slippage

You shouldnt even be running a tune prior to break in period. Your just making things worse running the tune before break in period.

Even after the break in period you have to "progressively" work the DCT with the increased of power. You just cant install a new tune and then WOT. You will still get slippage. The controller learns and then adapts by applying more bar pressure to clutches to accommodate the power.

For every significant add in power you have to "progressively" work the DCT for it to adapt

This is car is not like an automatic so dont treat it like one

N55 · 01-23-2013, 11:48 AM

+1 Way too early to tune the car.

mdyates · 01-23-2013, 01:06 PM

I appreciate everyone's feedback. I am a bit relieved to hear that it will adapt and improve. My early install was with Terry's blessing. With that said I have done no hard launches or redline runs.

For the moment I dialed back my JB4 to map 1 or 2. This is my third BMW w/JB4, but first time with DCT. Thanks for the input!

ZTZ1010 · 01-23-2013, 02:05 PM

Quote:

Originally Posted by mdyates

For the moment I dialed back my JB4 to map 1 or 2. This is my third BMW w/JB4, but first time with DCT. Thanks for the input!

you should dial it back to map 0/4 for the remainder of break in. Not sure how many more people need to tell you how detrimental tuning the car during break in.

FoShizzle · 01-23-2013, 02:24 PM

Hotrod182 didn't believe in a break-in and beat his car every second he drove it. Almost never had an issue and it was one of the fastest n54's on the track...

BEAR-AvHistory · 01-23-2013, 05:06 PM

Good for Hotrod182. Just because he may have gotten away with it does not make it a good idea.

Its interesting to see how many non-engineers on the internet know way more about the cars then the ones who design, test & build them. The flog it out the door is an urban legend created by a guy who builds racing engines for motorcycle & wrote a good piece for the net.

Thing is most race engines get rebuilt on a regular bases, Top Fuel between every round, & are not expected to last for a good number of years.

BTW break-in is not just about the engine its also about the clutches , trans, center section, brakes, tires etc. Think the OP has learned about breaking in the trans.

ZTZ1010 · 01-23-2013, 05:45 PM

Quote:

Originally Posted by BEAR-AvHistory

Good for Hotrod182. Just because he may have gotten away with it does not make it a good idea.

Its interesting to see how many non-engineers on the internet know way more about the cars then the ones who design, test & build them. The flog it out the door is an urban legend created by a guy who builds racing engines for motorcycle & wrote a good piece for the net.

Thing is most race engines get rebuilt on a regular bases, Top Fuel between every round, & are not expected to last for a good number of years.

BTW break-in is not just about the engine its also about the clutches , trans, center section, brakes, tires etc. Think the OP has learned about breaking in the trans.

This. +10000

01-22-2013, 11:36 PM	#1
mdyates Private First Class Drives: 13 335is DCT JB4 Join Date: Jul 2011 Location: Orlando Posts: 156 iTrader: (1)	DCT owners need your help!! Is this slip???! 900 miles on my 335IS. Just added JB4 and it is running great until today.. Seems to be slipping at anything over 15psi. Does the DCT break in and grab harder at the 1200 mi mark? Here is a vid: http://youtu.be/n4o3ADp1l20 __________________ 2013 335iS DCT, Alpine/Saddle NO Bolt ons! RFT JB4, BMS Flash, DCI, RECORD 1/4 JB4/Flash ONLY: 11.9 @118 mph
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01-23-2013, 07:25 AM	#3
BEAR-AvHistory 335is 7DCT/JB4-G5/ISO Drives: 2011 335is/JB4-G5/ISO Coupe Join Date: Jun 2011 Location: NC - USA Posts: 1,348 iTrader: (0)	Not a good plan to be pushing the car with a JB4 before its finished its factory set break-in. The factory software limits boost till just over 1200 miles & you are over riding the program. I put my JB4 in at 1400 miles & have not had any issues @ 16.5 psi. __________________ Kevin 2013 135is Cab 6MT - 2011 335is JB4/ISO - 2010 BMW X3 - 2009 V-Star 2009 Ford Expedition EL 4X4 - 2003 Xterra 4X4 - 1998 Ranger 4X4

01-23-2013, 10:58 AM	#4
David1 Colonel Drives: 09 E92 09 X5 Join Date: Mar 2007 Location: City With No Room For Ludicris Speed! Posts: 2,123 iTrader: (0)	There is no boost limit during the break in period. Only launch control is limited till you get to 1200 miles. There is no DCT break in as it is a wet clutch. __________________ 2009 335i CoupeLBM - Black Dakota/Glacier aluminum-6spd\|Nav\|M-Sport\|Premium\|Logic7\|Heated Seats\|CA\|BMW Performance Suspension & M3 Control Arms\|M3 lip spoiler 2009 X5 3.0-AW-Black Dakota/Bamboo\|Premium\|Tech\|Cold Weather\|Ipod Rear Climate\| 07 335 coupe - Sold 07 X3 - Sold

01-23-2013, 11:48 AM	#6
N55 Major Drives: 2012 335IS E92 Join Date: Nov 2010 Location: Pittsburgh Posts: 1,133 iTrader: (1) Garage List 2012 BMW 335IS [3.20] 2011 BMW 335XI (SOLD) [2.33] 2008 BMW 335xi (SOLD) [5.00]	+1 Way too early to tune the car. __________________ 2008 335xi E90 Alpine White - Sold - 8/19/10 > 2011 335xi E90 Jet Black - Sold - 6/27/12 > 2012 335IS E92 Crimson Red - Current

01-23-2013, 05:06 PM	#10
BEAR-AvHistory 335is 7DCT/JB4-G5/ISO Drives: 2011 335is/JB4-G5/ISO Coupe Join Date: Jun 2011 Location: NC - USA Posts: 1,348 iTrader: (0)	Good for Hotrod182. Just because he may have gotten away with it does not make it a good idea. Its interesting to see how many non-engineers on the internet know way more about the cars then the ones who design, test & build them. The flog it out the door is an urban legend created by a guy who builds racing engines for motorcycle & wrote a good piece for the net. Thing is most race engines get rebuilt on a regular bases, Top Fuel between every round, & are not expected to last for a good number of years. BTW break-in is not just about the engine its also about the clutches , trans, center section, brakes, tires etc. Think the OP has learned about breaking in the trans. __________________ Kevin 2013 135is Cab 6MT - 2011 335is JB4/ISO - 2010 BMW X3 - 2009 V-Star 2009 Ford Expedition EL 4X4 - 2003 Xterra 4X4 - 1998 Ranger 4X4 Last edited by BEAR-AvHistory; 01-23-2013 at 05:12 PM.

01-23-2013, 07:19 AM	#2
a7med606 Private First Class Drives: e92 335i Join Date: Nov 2011 Location: bahrain Posts: 174 iTrader: (0)	you got a message on the idrive that says transmition mode failure ? if yes it might be warmed up and you have to stop for cooling if u are unlucky thats slip and i hope its not

01-23-2013, 01:06 PM	#7
mdyates Private First Class Drives: 13 335is DCT JB4 Join Date: Jul 2011 Location: Orlando Posts: 156 iTrader: (1)	I appreciate everyone's feedback. I am a bit relieved to hear that it will adapt and improve. My early install was with Terry's blessing. With that said I have done no hard launches or redline runs. For the moment I dialed back my JB4 to map 1 or 2. This is my third BMW w/JB4, but first time with DCT. Thanks for the input!

01-23-2013, 02:24 PM	#9
FoShizzle aka Mike Drives: AW E92 335is Join Date: Jun 2008 Location: LA/Ventura, CA Posts: 1,280 iTrader: (11)	Hotrod182 didn't believe in a break-in and beat his car every second he drove it. Almost never had an issue and it was one of the fastest n54's on the track...

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