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Old 02-04-2011, 09:01 AM   #1
AVANTI R5
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Default 2012 Lexus LFA launch control technique revealed



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The Lexus LFA is finally making its way to its customers and with more and more of the 500 limited units making their way home, we are slowly finding out the specifics on some LFA features. One detail we’re finding out today is the launch control technique… and it’s a little bit tougher than 1, 2, 3.
Click here for more news on the Lexus LFA.
Hit the jump to see the full technique.
Refresher: Power for the Lexus LFA comes from a 4.8L V10 engine that makes 552-hp with a maximum torque of 354 lb-ft. Mated to a 6-speed Automated Sequential Gearbox, the LFA goes from 0-60 mph with a time of just 3.5 seconds and a top speed of 202 mph.
2012 Lexus LFA:

http://www.egmcartech.com/2011/02/03...8egmCarTech%29
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Old 02-04-2011, 11:35 AM   #2
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From the link:

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When set, launch control enables the vehicle to accelerate from a standing start at 4000 rpm. Launch control uses overall optimized control that considers vehicle acceleration performance, stability and clutch durability. (Do not use launch control on public roads.)

Setting the system
  1. Ensure that you are seated well back in the driver’s seat with the seat belt fastened. Make sure that the passenger is also seated well back with their seat belt fastened.
  2. Start the engine. Firmly depress the brake pedal with your left foot and release the parking brake. Continue to depress the brake pedal.
  3. Select SPORT driving mode.
  4. Select shift speed level 7.
  5. Pull the “+” paddle shift switch to select 1st gear.
  6. Pull the “-” paddle shift switch and hold it for 5 seconds. “LAUNCH” will be displayed on the meter.
  7. Release the “-” paddle shift switch.
  8. Depress the accelerator pedal firmly. Continue to depress the accelerator pedal. The engine speed will be automatically maintained at 4000 rpm. The vehicle is then ready for launch.
  9. Release the brake pedal. The vehicle will launch forward.

Once the accelerator pedal is released completely, launch control will be canceled and SPORT driving mode will be engaged.

Start-off acceleration
Start-off acceleration depends on how much the accelerator pedal is depressed.

Usage restrictions
Launch control can not be set if the total mileage shown on the odometer is less than 310 miles (500 km).
Launch control can not be set until the engine and transmission are fully warmed up. Before using launch control, warm up the vehicle by driving it.
Launch control can not be set if there is a malfunction in the engine, transmission, drive control system or other relevant systems.
As launch control places a significant load on the vehicle’s mechanisms,it cannot be used two or more times in succession. After using launch control, cruise at a normal speed for approximately 10 minutes to allow vehicle mechanisms to cool down.
To protect the systems,the number of times that launch control can be used is limited. To check how many times launch control has been used on your vehicle, contact your Lexus dealer.
- By: Omar Rana
Source: Lexus Enthusiast

Last edited by OrbitalEllipses; 02-04-2011 at 11:41 AM.
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Old 02-04-2011, 12:23 PM   #3
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^The number of times the launch control feature can be used is limited, so people have to check with their dealership to see how many they have left?
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Old 02-04-2011, 12:41 PM   #4
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Originally Posted by SilverSubaab View Post
^The number of times the launch control feature can be used is limited, so people have to check with their dealership to see how many they have left?
lesson of the day - dont buy a used LF-A without checking how many launch controls the car has left
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Old 02-04-2011, 07:23 PM   #5
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And the LFA continues to be the biggest ripoff in the automotive world.
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Old 02-04-2011, 07:34 PM   #6
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I guess Lexus learned a thing or two from the Nissan guys.
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Old 02-04-2011, 09:12 PM   #7
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thats dumb... limited amount of launches??
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Old 02-04-2011, 11:24 PM   #8
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Originally Posted by Hites View Post
And the LFA continues to be the biggest ripoff in the automotive world.
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Originally Posted by drummerboy827 View Post
I guess Lexus learned a thing or two from the Nissan guys.
LF-A looks like a riced out supra... hard to justify the price when the car doesnt look classy despite the performance. i wonder how many ppl will confuse the LF-A with $10k scions.
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Old 02-05-2011, 02:46 AM   #9
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Originally Posted by Hites View Post
And the LFA continues to be the biggest ripoff in the automotive world.
seriously.
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Old 02-05-2011, 09:19 AM   #10
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No doubt, I would pick the LFA over many other cars simply because of the sound alone and stellar quality. Magazine racers please go
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Old 02-05-2011, 09:42 AM   #11
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Originally Posted by SCRAPPYDO View Post
No doubt, I would pick the LFA over many other cars simply because of the sound alone and stellar quality. Magazine racers please go
talk is cheap. let's see one on your drive way given your current salary
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Old 02-05-2011, 09:44 AM   #12
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seriously.
Name me a bigger one instead of just sitting there looking confused.
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Old 02-05-2011, 09:44 AM   #13
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Originally Posted by JuggernautTCW View Post
LF-A looks like a riced out supra... hard to justify the price when the car doesnt look classy despite the performance. i wonder how many ppl will confuse the LF-A with $10k scions.
Really? A $10k Scion? Where can I find a $10k Scion that looks like this? Most of them look like boxes on wheels or bricky little coupes. Hyperbole much?

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Originally Posted by Hites View Post
Name me a bigger one instead of just sitting there looking confused.
It isn't a mass production car. The price they charge doesn't matter as far as "biggest ripoff" when they are making the car in extremely limited quantities, by hand, and only made to order. Hell, they've all been claimed as far as I know, so it doesn't matter how much it costs.

Last edited by quentinberg007; 02-05-2011 at 09:55 AM.
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Old 02-05-2011, 10:12 AM   #14
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Originally Posted by JuggernautTCW View Post
talk is cheap. let's see one on your drive way given your current salary
I would have to sell my Datsun to make room, so therefore no deal. But that is the only reason you do not see on in my driveway.. HAHAA
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Old 02-05-2011, 10:59 AM   #15
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This message is hidden because JuggernautTCW is on your ignore list.
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Old 02-05-2011, 12:23 PM   #16
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Originally Posted by Ghosthound View Post
thats dumb... limited amount of launches??
are you ****ting me? That's brilliant. Sometimes you have to save people from themselves. This isn't a bugeye. You can't just get a used tranny off an internet forum if something breaks. The engineers probably tested how much abuse the LFA drivetrain can take, then set a maximum number of launches significantly below that. I'm sure some aftermarket software will be able to reset the counter if you really feel the need to repeatedly abuse your expensive low production vehicle.
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Old 02-05-2011, 01:40 PM   #17
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Porsche manages to have a better gearbox that has unlimited warrantied launches.

Quite pathetic, really. This car would have been amazing 10 years ago, now? Notsomuch.
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Old 02-05-2011, 02:54 PM   #18
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Quote:
Originally Posted by Hites View Post
Name me a bigger one instead of just sitting there looking confused.
How about naming a monocoque which is cheaper.

Hint: It's the cheapest car of its construction EVER made.

The performance/$$$ of any true exotic is crap compared to today's best sports cars.

Get over it. Car isn't about the numbers, like any other car in that class.
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Old 02-05-2011, 03:53 PM   #19
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Originally Posted by skywaffles View Post
Porsche manages to have a better gearbox that has unlimited warrantied launches.

Quite pathetic, really. This car would have been amazing 10 years ago, now? Notsomuch.
you sure about porsche and warranty coverage?

http://highboostforum.com/forum/show...job-at-Porsche
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Old 02-06-2011, 12:11 AM   #20
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Originally Posted by skywaffles View Post
Porsche manages to have a better gearbox that has unlimited warrantied launches.

Quite pathetic, really. This car would have been amazing 10 years ago, now? Notsomuch.
So let's keep a few things in perspective.

This car is $100k cheaper than a McLaren SLR. And is faster. And, like Rex8 said, the cheapest car ever made with a carbon monocoque.

Plus a lot of the techniques used to weave the carbon fiber are brand new and pioneered by Toyota just for the LFA, with inevitable trickle-down to less expensive cars as time wears on.

The engineers at Lexus decided against a dual-clutch unit because they felt the gear change was too smooth, and felt too much like an automatic. Ironic, considering the paucity of clutch pedal-equipped cars from Lexus. But shows that they're not just hung up on lap times - there's more to an exotic than just the quickest lap.

Just because Porsche hasn't taken negative publicity for launch control with their PDK gearbox doesn't mean they'll warranty it against any hoonassery their buyers subject them to. Just means that the people who've bought them are well-heeled enough to fix the damages or haven't been as inclined to beat the tar out of their gearboxes from day 1 the way GT-R owners have.

The car is undeniably expensive, but it's far from pathetic, when you consider the whole package. The engine is a masterpiece, and the chassis is cutting edge. You could hardly call it slow (and the fact that there are exotics that are just as fast that cost $100k less is immaterial at this price point). Plus, you get the fit and finish, materials quality, and some attention to comfort you'd expect from a Lexus, which is a step up from any of its Italian competition.

If I were richer than God and looking for a new exotic, I probably wouldn't buy the LFA, but that doesn't mean I can't respect the technology and insane attention to detail that went into its creation, or downplay the reasons it costs what it does just because I could buy a loaded Gallardo for considerably less.
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Old 02-06-2011, 02:28 AM   #21
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car this expensive are mostly for rich people to park in their garage not for people to lunch!
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Old 02-06-2011, 03:08 AM   #22
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Seriously. You make $5,000,000 a year and you walk into an exotic car dealership - "price/performance" never enters your mind. Exclusivity does.
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Old 02-06-2011, 03:22 AM   #23
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Originally Posted by n2oiroc View Post
you sure about porsche and warranty coverage?

http://highboostforum.com/forum/show...job-at-Porsche
I'm not sure what you're getting at by posting a thread about something completely unrelated.
Quote:
Originally Posted by Omophorus View Post
So let's keep a few things in perspective.


This car is $100k cheaper than a McLaren SLR. And is faster. And, like Rex8 said, the cheapest car ever made with a carbon monocoque.

Plus a lot of the techniques used to weave the carbon fiber are brand new and pioneered by Toyota just for the LFA, with inevitable trickle-down to less expensive cars as time wears on.

The engineers at Lexus decided against a dual-clutch unit because they felt the gear change was too smooth, and felt too much like an automatic. Ironic, considering the paucity of clutch pedal-equipped cars from Lexus. But shows that they're not just hung up on lap times - there's more to an exotic than just the quickest lap.

Just because Porsche hasn't taken negative publicity for launch control with their PDK gearbox doesn't mean they'll warranty it against any hoonassery their buyers subject them to. Just means that the people who've bought them are well-heeled enough to fix the damages or haven't been as inclined to beat the tar out of their gearboxes from day 1 the way GT-R owners have.

The car is undeniably expensive, but it's far from pathetic, when you consider the whole package. The engine is a masterpiece, and the chassis is cutting edge. You could hardly call it slow (and the fact that there are exotics that are just as fast that cost $100k less is immaterial at this price point). Plus, you get the fit and finish, materials quality, and some attention to comfort you'd expect from a Lexus, which is a step up from any of its Italian competition.

If I were richer than God and looking for a new exotic, I probably wouldn't buy the LFA, but that doesn't mean I can't respect the technology and insane attention to detail that went into its creation, or downplay the reasons it costs what it does just because I could buy a loaded Gallardo for considerably less.
I'm just saying for all the R&D that was put into the thing and how long Toyota kept it in the oven, it's very underwhelming. All the supercool technobabble parts add up to something that isn't very special. It's a fancy mid engined Toyota. It's an extremely technologically advanced appliance like the GTR.
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Originally Posted by manticus View Post
Seriously. You make $5,000,000 a year and you walk into an exotic car dealership - "price/performance" never enters your mind. Exclusivity does.
Which means no fancy Toyota.
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Old 02-06-2011, 03:55 AM   #24
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The engineers at Lexus decided against a dual-clutch unit because they felt the gear change was too smooth, and felt too much like an automatic.
Yeah, right.

The reason a dual-clutch transmission is smoother is because single clutch automated manuals need to interrupt the power while they're shifting. You could do exactly the same thing (interrupt the power) with a dual clutch transmission if you wanted more jerky shifts.

And since when are 0.5 secs periods with no power between gears considered sporty? You're not accelerating and you unsettle the car.

This car has a single clutch AMT because:
a) old farts who buy exotics don't drive manuals
b) developing a dual clutch transmission is expensive

'The engineers felt it was too smooth' is pure marketing spin, it was the accountants who felt that a single clutch transmission was good enough.
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Old 02-06-2011, 09:25 AM   #25
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Yeah, right.

The reason a dual-clutch transmission is smoother is because single clutch automated manuals need to interrupt the power while they're shifting. You could do exactly the same thing (interrupt the power) with a dual clutch transmission if you wanted more jerky shifts.

And since when are 0.5 secs periods with no power between gears considered sporty? You're not accelerating and you unsettle the car.

This car has a single clutch AMT because:
a) old farts who buy exotics don't drive manuals
b) developing a dual clutch transmission is expensive

'The engineers felt it was too smooth' is pure marketing spin, it was the accountants who felt that a single clutch transmission was good enough.
All I have to go by is what's on the intertubes.

According to http://www.bangkokpost.com/auto/auto.../straight-talk, the dude in charge tried a DCT, didn't think it fit the character of the car, and ditched it.

And 200ms breaks in power can be considered sporty if you're looking for "positive shift feel" (woo, marketing buzzwords!) rather than out-and-out speed.

Seems bassackwards to not optimize a $350,000+ supercar for speed at all costs, but the simple truth is very few hypercars spend much, if any, time on the track, so being fast enough to brag about, with some unique touches (like the insanely revvy V10), and a unique driving experience is what will attract buyers. That, plus exclusivity.
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