Lexus LFA – More Than Just On Paper and The Drive
03-04-11, 11:03 AM
#1
Lexus LFA – More Than Just On Paper and The Drive
Two articles have been posted on Club Lexus front page on the Lexus LFA
Lexus LFA - More Than Just On Paper
Lexus LFA - The Drive
Please feel free to discuss the articles here
Lexus LFA - More Than Just On Paper
Lexus LFA - The Drive
Please feel free to discuss the articles here
Last edited by rominl; 03-04-11 at 11:09 AM.
03-04-11, 12:32 PM
#2
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I liked your articles, especially the Drive one. I am actually a bit relief to hear that the LFA is not too loud at normal city speed. I guess this is the driving mode for enjoying soft music from the ML system.
03-04-11, 01:23 PM
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The data file I have shows two key things here, which attribute to make it a very "likeable" daily driver...
For the Intake System:
The LFA (similiar to the IS-F) benefits from a Dual Stage Intake system, which has secondary ports or doors that flip open at 3,000 Rpms...
However, the LFA has TWO of these Dual stage intake boxes, while the IS-F only has the one.
For the Exhaust System:
The LFA also has the benefits of that Dual Stage Valve Actuated system, for the rear Muffler section, which also remains closed below 3,000 Rpms...
Both of these systems work together to give you a very manageable drive under 3,000 Rpms...
BUT above it, it truly is a whole different game!!!
I have been researching both of these systems closely.
Joe Z
Last edited by Joe Z; 03-04-11 at 01:28 PM.
03-04-11, 01:47 PM
#6
Moderator: LFA, Clubhouse
Hey rominl (and this question can also go to anyone who has driven the car to simulate street driving, like motohide) - I'm hoping Lexus didn't do anything with the transmission to simulate automatic torque converter "creep" (i.e., car in drive, release brakes, it creeps forward even without throttle application) like Ferrari did with the DCT in the California?
03-04-11, 01:51 PM
#7
NOP, absolutely nothing like that. If you put the car in gear and let go of brakes, car will just sit there (if it's flat surface). In fact, the instructor had to told me specifically that's the case. He said some people freak out the car doesn't move when let go of brakes.
I very much prefer this setup. Give me more feeling that I am driving a manual
i suppose if i am on uphill and let go of brakes, car might roll back?
I very much prefer this setup. Give me more feeling that I am driving a manual
i suppose if i am on uphill and let go of brakes, car might roll back?
Last edited by rominl; 03-04-11 at 01:59 PM.
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03-05-11, 01:45 PM
#8
Moderator: LFA, Clubhouse
NOP, absolutely nothing like that. If you put the car in gear and let go of brakes, car will just sit there (if it's flat surface). In fact, the instructor had to told me specifically that's the case. He said some people freak out the car doesn't move when let go of brakes.
I very much prefer this setup. Give me more feeling that I am driving a manual
I very much prefer this setup. Give me more feeling that I am driving a manual
Probably not - most single clutches have mechanisms to prevent rolling backwards in neutral (or at least not very far - I think I read somewhere that BMW's earlier SMG I rolled backwards a fraction of an inch).
03-05-11, 03:10 PM
#9
Lexus Test Driver
Yep. I can confirm the SMGII and SMGIII both had uphill assist mode where it will hold for about 5 seconds uphill, if you let go of the brakes.
Ofcourse, even in the 6 speed manual BMWs, the uphill assist is included as a feature where you don't have to use the e-brake to hold the car from rolling back when you are modulating the clutch with the throttle to start.
Ofcourse, even in the 6 speed manual BMWs, the uphill assist is included as a feature where you don't have to use the e-brake to hold the car from rolling back when you are modulating the clutch with the throttle to start.
03-05-11, 04:02 PM
#10
Yeah, same - I'm glad to hear this. I was shocked Ferrari introduced it on the DCT for the California. From what I understand, they didn't do it for the 458. Guess it shows what they think of the California......
Probably not - most single clutches have mechanisms to prevent rolling backwards in neutral (or at least not very far - I think I read somewhere that BMW's earlier SMG I rolled backwards a fraction of an inch).
Probably not - most single clutches have mechanisms to prevent rolling backwards in neutral (or at least not very far - I think I read somewhere that BMW's earlier SMG I rolled backwards a fraction of an inch).
Yep. I can confirm the SMGII and SMGIII both had uphill assist mode where it will hold for about 5 seconds uphill, if you let go of the brakes.
Ofcourse, even in the 6 speed manual BMWs, the uphill assist is included as a feature where you don't have to use the e-brake to hold the car from rolling back when you are modulating the clutch with the throttle to start.
Ofcourse, even in the 6 speed manual BMWs, the uphill assist is included as a feature where you don't have to use the e-brake to hold the car from rolling back when you are modulating the clutch with the throttle to start.
03-05-11, 04:23 PM
#11
Lexus Test Driver
Actually, I think M-DCT has the same feature as well, but probably you have to activate it through holding the shift lever forward or something.
yes, even my 6mt m3 has the hill assist but it's only a few seconds. iirc, when i was at the m school driving the m3 dct, it was put in 1st, stopped, and i let go of brakes. after a while the car started to roll back and no sign of stopping. so i wonder if that's the case on lfa (stop for a few secs and roll back) or not?
03-05-11, 05:44 PM
#13
Lexus Test Driver
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