Last post on Jun 13, 2013 at 11:06 AM
You are in the Lexus LS 400/LS 430
What is this discussion about?
Lexus LS 400, Lexus LS 430, Sedan
#1569 of 8465 E-throttle
Jul 12, 2001 (1:59 pm)
"Noise, emissions, fuel economy, compression ratio, have different priorities in the LS versus the 911/996"
My 2001 AWD 996 gets more than 25 MPG cruising at 75-80 MPH. 20MPG on the autobahn averaging more than 100MPH.
I have no doubt that both the 911 and the LS use different engine control dynamics depending on the operator's immediate driving style. My wife was quite surprised at how quiet and comfortable the 911 was when simply cruising down the autobahn or US freeways. She didn't take too kindly to the use of cruise control above 100MPH on the autobahn however.
The 911's engine performance is quite docile and quiet unless you put your foot in it.
Emissions rules are set by the US goverment and I doubt if they vary from one manufacturer to another.
Fuel economy: The only issue I can think of here is the manufacturer's, BOTH, interest in meeting US designated fleet average requirements, and avoiding the gas guzzler penalty.
Compression Ratio: both require premium unleaded fuel and both have engine knock detection if a lower grade fuel is inadvertantly used.
I find that as long as I drive my 911 in a sedate manner, it sounds and performs very much like the LS. Why shouldn't I expect Lexus to be able to use the very same techniques, engineering design tools and methods used by Porsche to achieve the same result?
Yes, at full throttle the 911/996 does sound and perform much like an F86D on afterburner taking off. If I put my foot down in my LS why would I expect anything less? I wouldn't expect to do that very often in the LS, but when I do I'm doing so becuase I want to MOVE out, and on these rekative rare occassions I would accept whatever level of noise it takes to get me out into the passing lane and around the slower vehicle and back safely into my lane quickest.
Jul 12, 2001 (2:11 pm)
You've surfaced! I was getting awfully worried about you. How the heck are you?
bitkahuna - the 98 LS400 rolled down the windows, not sure if it also slid the sunroof open though I thought the dealer said it did at the time I leased it - but I never did try to do it. Haven't tried either on the new model as I tend to forget about these extras but I guess i will have to.
#1571 of 8465 windows/moonroof rolldown, etc.
Jul 12, 2001 (5:17 pm)
On my Ultra, if you hold the open button down longer than about 3 seconds, all the windows and the moonroof open/retract. I thought this was a standard on all models, though, not just the ultras. They also stop in their current position if you let up on the button, so you can open them just partway to let the heat out, or all the way if you wish.
As an additional wishlist item, I would expect a nav upgrade to include Canada and Alaska. I thought the original brochure said the nav. already did, but mine does not. AND WHERE'S THE DAMN PHONE????? This is probably the most blatant and inexcusable issue that Lexus has dropped the ball on, in my opinion. Truly inexcusable in a car of this caliber.
Jul 12, 2001 (6:06 pm)
"I find that as long as I drive my 911 in a sedate manner, it sounds and performs very much like the LS."
Always a challenge, huh?
I can drive a Chevy Lumina sedately too and it's very quiet, but that doesn't mean it's even REMOTELY like an LS430.
There's no way your Porsche engine is as smooth as the V8 in the LS430.
Getting back to the original point - you said if Porsche can make a 300HP 6 cylinder engine, why can't Lexus do the same... so would you really prefer your Porsche engine in the LS430?
#1573 of 8465 yep - opens windows & roof
Jul 12, 2001 (6:30 pm)
flint350 - agree with you 100% on phone - only real disappointment in this car. I never got the groan did you?
#1574 of 8465 porsche powered LS
Jul 12, 2001 (7:27 pm)
I don't see why not....
The 911 engine is the boxer type, left side cylinder travel is 180 degrees from right, perfect balance, maybe more so than the Lexus V8.
Smooth and quiet operation, less weight, equal power, fewer displacement liters equals better mileage in simple cruise.
I have always thought that a small displacement "boxer" engine with a variable rate positive displacement super-charger to add extra horses when needed would be the best overall answer to the fuel economy versus performance (Torque, HP) issue.
At simple cruise, or really anything less than WOT, the super-charger turns only at a rate high enough to supply just the right amount of airflow with no over-pressure. Only at WOT does the super-charger spool up to maximum boost.
Also, maybe you have missed something important. Porsche 911/996 engines are now water cooled and that has resulted in a much quieter operation of the engine.
I have the engine speed, torque, HP curves for the 911, are they available anywhere that you know of for the LS430?
Jul 12, 2001 (10:55 pm)
flint & ljflx: Yes. Phones, phones, give us phones!! Integrated phones with voice activation, antenna connections, and 5 watt booster amps.
Jul 13, 2001 (3:54 am)
Talked with Lexus customer service yesterday, and they said they're still working on the phones, and don't have a roll-out date yet. I'm not holding my breath though.
Jul 13, 2001 (12:38 pm)
Dear Lexus enthusiasts. Despite all prior promises the Phone is nowhere in sight. Lexus has betrayed us and I believe we should revolt at least send off a letter of condemnation. If only Lexus did not remain mute on the subject and expressed their responsibility for a bad design and informed its customers of when a fix will occur. For purchasers of a Luxury Vehicle we are receiving a peon treatment.
Jul 13, 2001 (1:16 pm)
Check-out the S-class board if you want to see bad treatment. They deal with everything from popcorn making dashboards to foul odor smells coming from vents to lopsided cars to electrical warnings going off on a whim and then some. Then the dealers tell them nothing is wrong which makes people over there think the dealers are so inudated with service issues tha they can't keep up with the volume. That's bad treatment. The phone is a nice thing to have and I hope they do something about it but I don't lose any sleep over it. I must say my dealer experience and treatment from Lexus direct(they've always waived things for me on lease payments, went out of their way to let a friend buy my 95 LS400 at a time that the market value was noticably higher than my buyout etc.)has been so good that its hard to express dis-satisfaction on any part of the ownership experience. So - they got one wrong - they are still closer to being perfect than anyone else, that's for sure. Phone or no phone - I wouldn't trade this car for any other car in this class.