Cobb tuner and mods question... Help,please

slickman · 08-07-2014, 09:29 AM

I'm new to the BMW world and there is something I'm trying to understand. I have looked around and have not found anything concrete to answer my understanding.

I have (not installed yet) a Cobb tuner V3, FMIC, catted down pipes, mid pipe cat delete and axle back. Does the Cobb tuner change they way the car reacts when trying to do a burnout for example? If I understand it when you do a burnout it will cut the power if the rotation of the tires go beyond a a time period or rotations of one tire (or both tires) and stop it from doing it.

I know you need to turn off the DTC and DSC.. I tried doing a burnout to check if my understanding is correct and it seemed to cut the power or did apply the brakes for the eLSD system (which I know is on all the time no matter what).

Will the Cobb tune change the way this all reacts?

DietTab · 08-07-2014, 09:37 AM

The cobb doesn't affect the DSC system at all.

RX-BMW · 08-07-2014, 10:20 AM

If you 'need' to do a burnout, turn off DTC/DSC. Cobb doesnt change those settings one bit.

slickman · 08-07-2014, 10:24 AM

Okay, so can I assume that doing a burnout will be allot easier after the Cobb install (and all the related stuff I have to install) cause I will have allot more TQ? I'm use to having cars with over 400hp at the wheels so, sorry for the stupid questions. I just want to make sure it nothing mechanical limiting it. My last car had 475 HP at the wheels..

velociti · 08-07-2014, 10:56 AM

Well, as you know, it's not necessarily horsepower that's going to get you a solid burnout, but torque. The 135 (either N54 or N55) will have MORE than enough torque for a lengthy burnout if modded as you say.

slickman · 08-07-2014, 11:08 AM

In playing around I did notice that at some point the ECU will cut the engine power when both wheels are not turning. It seems there is a balance to getting a burn out to happen. Unlike cars I'm use too. So, I guess I have to re-learn how to do burnouts in a BMW (yes, I like doing it).. I was trying it again (yup, 60 years old and I'm still a kid) and you must do this one way or it won't happen. I have had Muscle cars all my life so, this is a new experience... I'm not new to modding or building HP or engines for that matter. I'm just new to this BMW world..

My car prior to this was 475 hp / 489 ft tq at the wheels on a dyno.

shibbay · 08-07-2014, 08:53 PM

Are you completely turning off traction control?

After starting the car, push and hold the DTC button for around 5 seconds. It'll show you a different icon on your dash vs pressing the DTC button quickly.

I've never had a problem with getting the wheels to slip from a stop with traction control completely off.

slickman · 08-11-2014, 05:49 PM

Quote:

Originally Posted by shibbay

Are you completely turning off traction control?

After starting the car, push and hold the DTC button for around 5 seconds. It'll show you a different icon on your dash vs pressing the DTC button quickly.

I've never had a problem with getting the wheels to slip from a stop with traction control completely off.

Yes. It looks like maybe TQ limiting was a factor. After I installed the Cobb stage 1, problem is gone.

slickman · 08-16-2014, 09:45 AM

Yup, I think that was it because now after the stage one Cobb install, problem is gone.

08-07-2014, 09:29 AM	#1
slickman Best Made Winner 17 Rep 127 Posts Drives: 2008 335I Join Date: Jul 2014 Location: NY iTrader: (1)	Cobb tuner and mods question... Help,please I'm new to the BMW world and there is something I'm trying to understand. I have looked around and have not found anything concrete to answer my understanding. I have (not installed yet) a Cobb tuner V3, FMIC, catted down pipes, mid pipe cat delete and axle back. Does the Cobb tuner change they way the car reacts when trying to do a burnout for example? If I understand it when you do a burnout it will cut the power if the rotation of the tires go beyond a a time period or rotations of one tire (or both tires) and stop it from doing it. I know you need to turn off the DTC and DSC.. I tried doing a burnout to check if my understanding is correct and it seemed to cut the power or did apply the brakes for the eLSD system (which I know is on all the time no matter what). Will the Cobb tune change the way this all reacts?
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08-07-2014, 09:37 AM	#2
DietTab First Lieutenant 12 Rep 324 Posts Drives: 08 135i Join Date: May 2014 Location: Manhattan, KS iTrader: (2)	The cobb doesn't affect the DSC system at all. __________________ LSXOCET - 404rwhp @ 1600 lbs curb weight... bonkers fast
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08-07-2014, 10:20 AM	#3
RX-BMW Second Lieutenant 18 Rep 268 Posts Drives: 2009 135i sport package 6AT Join Date: Aug 2010 Location: St. Louis iTrader: (0)	If you 'need' to do a burnout, turn off DTC/DSC. Cobb doesnt change those settings one bit. __________________ Custom Wedge MHD 2+ Aggressive, AR Catless DP, ETS 5 FMIC, BMS DCI, BMS OCC, Berk Axleback, CF Diffuser, CP-E Chargepipe
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08-07-2014, 10:24 AM	#4
slickman Best Made Winner 17 Rep 127 Posts Drives: 2008 335I Join Date: Jul 2014 Location: NY iTrader: (1)	Okay, so can I assume that doing a burnout will be allot easier after the Cobb install (and all the related stuff I have to install) cause I will have allot more TQ? I'm use to having cars with over 400hp at the wheels so, sorry for the stupid questions. I just want to make sure it nothing mechanical limiting it. My last car had 475 HP at the wheels..
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08-07-2014, 10:56 AM	#5
velociti First Lieutenant 182 Rep 322 Posts Drives: 2009 E90 M3 Join Date: Jun 2013 Location: PA iTrader: (1)	Well, as you know, it's not necessarily horsepower that's going to get you a solid burnout, but torque. The 135 (either N54 or N55) will have MORE than enough torque for a lengthy burnout if modded as you say.
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08-07-2014, 11:08 AM	#6
slickman Best Made Winner 17 Rep 127 Posts Drives: 2008 335I Join Date: Jul 2014 Location: NY iTrader: (1)	In playing around I did notice that at some point the ECU will cut the engine power when both wheels are not turning. It seems there is a balance to getting a burn out to happen. Unlike cars I'm use too. So, I guess I have to re-learn how to do burnouts in a BMW (yes, I like doing it).. I was trying it again (yup, 60 years old and I'm still a kid) and you must do this one way or it won't happen. I have had Muscle cars all my life so, this is a new experience... I'm not new to modding or building HP or engines for that matter. I'm just new to this BMW world.. My car prior to this was 475 hp / 489 ft tq at the wheels on a dyno.
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08-07-2014, 08:53 PM	#7
shibbay New Member 0 Rep 12 Posts Drives: 2011 135i DCT Join Date: Jul 2014 Location: Sacramento, CA iTrader: (0)	Are you completely turning off traction control? After starting the car, push and hold the DTC button for around 5 seconds. It'll show you a different icon on your dash vs pressing the DTC button quickly. I've never had a problem with getting the wheels to slip from a stop with traction control completely off.
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08-16-2014, 09:45 AM	#9
slickman Best Made Winner 17 Rep 127 Posts Drives: 2008 335I Join Date: Jul 2014 Location: NY iTrader: (1)	Yup, I think that was it because now after the stage one Cobb install, problem is gone.
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