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#11
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2011.5 Dinan ///M3: SSII DCT Competition Pkg Convenience Pkg Premium Pkg 2 Heated Seats Enhanced Premium Sound Black Kidney Grills BMW M Performance Steering Wheel BMW Carbon Fiber Performance Spoiler BMW Aluminum Pedals Dinan Exhaust Dinan Mid-Exhaust (x-pipe) Dinan Carbon Fiber Intake Dinan Performance Tune Dinan Pulley Kit Dinan CH-R Wheels Dinan Carbon Fiber Strut Tower Braces Arkym Front Lip Carbon Reflectors Lux H8 V3 Brembo 365mm BBK |
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#12
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Hard on the transmission yes, but the engine doesnt care, LC revs it to what.. 3-4k and off you go. If it is like LC in the other M products, you're limited to once every 15 minutes or something like that. However with my M5 I used to be able to do the same thing by holding the brake and stomping on the gas, let of the brake pedal and presto...a huge burnout through 1,2, and 3rd gear.
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2013 Cayenne GTS Basalt Black/Alcantara (Wife's Daily Driver) 2013 Porsche 911 cab Aqua over pebble and agate (My daily driver) 2010 Porsche GT3RS Black Grey/Black Alcantara (Track car) 2012 Porsche CaymanR Peridot Green with carbon sport buckets (Wife's Track car) |
#13
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Not sure how it would be bad for the engine. Or at least any worse than flooring it. Never heard anything about using it more than 3 times voids the warranty. They will be in for a fight for this one.
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#14
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Read about the Nissan GT-R issues.
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2007 X3 3.0si, 6 MT, Premium, White Retired: 2008 535i, 6 MT, M Sport, Premium, Space Grey 2003 X5 3.0 Steptronic, Premium, Titanium Silver 2002 325xi 5 MT, Steel Grey 2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue |
#15
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My understanding is that was a transmission/drivetrain issue. Also, two very different systems. GTR is a dual clutch. X5M is an auto with torque converter.
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#16
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I don't think it has a torque converter. It works by selectively shoting down a few cylinders during the shifts to reduce torque, very unique transmission.
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#17
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Quote:
I should clarifiy that I am talking about the 2010 6 spd auto for the X5M. Last edited by 998M; 10-15-2010 at 08:35 PM. |
#18
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I don't think LC harms the engine, but it is hard on the driveline. Since you have a full automatic, with a torque converter, the risks relate to heat as much as anything. There is just as much of a reason to limit the frequency of launches with an automatic as there is with clutches. My comment on the GT-R wasn't about the engine, it was about what happens when a manufacturer offers these systems. Nissan has apparently pulled their system now, citing 'a warranty nightmare'. Not hard to imagine that situation. I think that a manufacturer including a launch control system is asking for trouble. Frequent use of it would qualify as abuse. Anyway, with your planned performance chip, why would warranty coverage matter? I was reading recently about an X6M that got a Powerchip and an exhaust. He broke a rear halfshaft. $3000. Warranty denied due to modifications on vehicle. Owner said that you can't prove I have a chip tune. BMW said fine, you have an exhaust, we'll go with that. Warranty denied. Serial number flagged. Got to pay to play.
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2007 X3 3.0si, 6 MT, Premium, White Retired: 2008 535i, 6 MT, M Sport, Premium, Space Grey 2003 X5 3.0 Steptronic, Premium, Titanium Silver 2002 325xi 5 MT, Steel Grey 2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue |
#19
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Quote:
__________________
2011.5 Dinan ///M3: SSII DCT Competition Pkg Convenience Pkg Premium Pkg 2 Heated Seats Enhanced Premium Sound Black Kidney Grills BMW M Performance Steering Wheel BMW Carbon Fiber Performance Spoiler BMW Aluminum Pedals Dinan Exhaust Dinan Mid-Exhaust (x-pipe) Dinan Carbon Fiber Intake Dinan Performance Tune Dinan Pulley Kit Dinan CH-R Wheels Dinan Carbon Fiber Strut Tower Braces Arkym Front Lip Carbon Reflectors Lux H8 V3 Brembo 365mm BBK |
#20
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I've played with LC a bunch of times on my car. It doesn't let you do it more than every few minutes. Not sure exactly how many minutes. But I tried doing it at every stop sign and it didn't work. At first I thought I wasn't doing it right, but then read in the manual it only allows you to do it every few minutes.
As far as how harsh it is on the transmission, it's brake torquing, so it's pretty hard on it. But, if you only hold the brake down briefly, for example, hold brake, floor the gas, then wait for the checkered flag and go right away, it's not too bad. Whereas, if you're at a traffic light hold it down for a long time waiting for the green light would be bad.
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2022 X5M Comp Dravit Grey/Full Silverstone Previous: 2018 M5 Black/Full Silverstone 2015 X5M Donington Grey/Full Silverstone 2010 X5M Space Grey/Full Silverstone 2003 4.6is Silver/Black |
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