XI launch

j1gilles · 04-06-2013, 11:03 PM

Ok my fellow xi owners out there... Im heading to the track for the first time in my 09 xi auto and I was wondering which gear I should launch the car in? Ive heard 2nd gear is the way to go but is that due to a lack of traction or is it because 1st gear is short? Traction is not a problem for me so is 1st the way to go? I made a custom kick-down block so a 2nd gear launch wouldnt be a problem either. My mods are JB4, Meth, DCI, Borla mids. Thanks!

Carl Morris · 04-07-2013, 12:03 AM

Quote:

Originally Posted by j1gilles

Ok my fellow xi owners out there... Im heading to the track for the first time in my 09 xi auto and I was wondering which gear I should launch the car in? Ive heard 2nd gear is the way to go but is that due to a lack of traction or is it because 1st gear is short? Traction is not a problem for me so is 1st the way to go? I made a custom kick-down block so a 2nd gear launch wouldnt be a problem either. My mods are JB4, Meth, DCI, Borla mids. Thanks!

I believe that for people who aren't traction limited first gear makes the most sense.

j1gilles · 04-07-2013, 10:34 AM

Thanks.. First gear is what Im going with then.

amclint · 04-09-2013, 10:13 AM

Quote:

Originally Posted by j1gilles

Ok my fellow xi owners out there... Im heading to the track for the first time in my 09 xi auto and I was wondering which gear I should launch the car in? Ive heard 2nd gear is the way to go but is that due to a lack of traction or is it because 1st gear is short? Traction is not a problem for me so is 1st the way to go? I made a custom kick-down block so a 2nd gear launch wouldnt be a problem either. My mods are JB4, Meth, DCI, Borla mids. Thanks!

2nd gear launches will burn through your clutch packs, not recommended and it's only .1 to .15 faster over the 1/4 mile anyway.

Davecrobison · 04-27-2013, 05:05 PM

Due to the current problem I'm having with my xdrives front TC actuator I can hear the front wheel drive part of my car engaging at around 10mph.It stays engaged TIL I cut the car off and it sets for just over 30 seconds(powers down) You might wanna check into this mainly because under a hard launch that crappy plastic gear in the actuator may strip . I guess just get up to 10mph before you launch to engage the front wheels and don't cut the car off TIL you run it

04-06-2013, 11:03 PM	#1
j1gilles Captain 51 Rep 719 Posts Drives: 2009 335xi Join Date: Feb 2013 Location: Chicago iTrader: (0)	XI launch Ok my fellow xi owners out there... Im heading to the track for the first time in my 09 xi auto and I was wondering which gear I should launch the car in? Ive heard 2nd gear is the way to go but is that due to a lack of traction or is it because 1st gear is short? Traction is not a problem for me so is 1st the way to go? I made a custom kick-down block so a 2nd gear launch wouldnt be a problem either. My mods are JB4, Meth, DCI, Borla mids. Thanks!
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04-07-2013, 10:34 AM	#3
j1gilles Captain 51 Rep 719 Posts Drives: 2009 335xi Join Date: Feb 2013 Location: Chicago iTrader: (0)	Thanks.. First gear is what Im going with then.
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04-27-2013, 05:05 PM	#5
Davecrobison New Member 0 Rep 10 Posts Drives: 2010 328i xdrive Join Date: Apr 2013 Location: Knoxville Tennesse iTrader: (0)	Due to the current problem I'm having with my xdrives front TC actuator I can hear the front wheel drive part of my car engaging at around 10mph.It stays engaged TIL I cut the car off and it sets for just over 30 seconds(powers down) You might wanna check into this mainly because under a hard launch that crappy plastic gear in the actuator may strip . I guess just get up to 10mph before you launch to engage the front wheels and don't cut the car off TIL you run it
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