LCI V8 vs. MY07 V8

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03-01-2007, 01:54 PM

#11

AlexFW

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Quote:

Originally Posted by andy545' post='397196' date='Mar 1 2007, 07:11 PM

They're getting better mpg due to the energy regeneration technology. The alternator doesn't need to work when there is enough battery reserve = bit more power on tap and nice fuel consumption.

No progman on this one nor will the hardware be retrofittable within any reason.

It's just amazing lookin at those figures...

In fact 550i wasn't enough powerful : now with +3 HP is faster

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03-01-2007, 04:59 PM

#12

SergeyM

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Quote:

Originally Posted by AlexFW' post='397335' date='Mar 1 2007, 05:54 PM

In fact 550i wasn't enough powerful : now with +3 HP is faster

I think BMW intentionally detuned 2006-2007 550 engine. Everyone knows that 550s aren?t faster than 545s. Probably BMW decided that now it is time for them to extract the real power from 4.8 liter engine. I almost sure that with the latest software my sleeping beauty (2007 550) will come alive. Just check how well the same engine performs in 750 Li. This car being heavier that S550 (382hp/391lb/f) usually shows the same acceleration numbers as the Benz. On the other hand 550 (BMW) gets destroyed by 550 (E) in all tests.

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03-01-2007, 07:36 PM

#13

doug_999

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Quote:

Originally Posted by SergeyM' post='397393' date='Mar 1 2007, 07:59 PM

..... Everyone knows that 550s aren?t faster than 545s. .....

Except the magazines which for the most part have shown the 550 to be faster. Of course they use automated testing equipment - so what do they know!

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03-01-2007, 08:04 PM

#14

Mac Daddy

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Quote:

Originally Posted by SergeyM' post='397393' date='Mar 1 2007, 08:59 PM

I wonder if you are onto something here. I am not sure that 550s "aren't faster" than 545s -- most magazine tests show that they are, but not by much. Certainly not as much as they should be. And you are exactly right about the 750 -- the last test I saw had it trapping at 103mph, despite weighing 600 lbs more than the 550. Extrapolating that would lead you to believe that the 550 should trap in the 106-107 range.

I hope you are right as I am getting a 08 550i in June. We shall see!

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03-01-2007, 08:51 PM

#15

SergeyM

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Originally Posted by doug_999' post='397445' date='Mar 1 2007, 11:36 PM

Except the magazines which for the most part have shown the 550 to be faster. Of course they use automated testing equipment - so what do they know!

From what I've read the 550 is faster with 6-speed (o-60mph in 5.0 sec vs. 5.5 sec for 545). Auto is a different story. The fastest 0-60 mph time is 5.2 sec and it is the same for both models. According to my old G-Tech Pro my 545 ran 0-60mph in 5.11 sec. I am yet to try 550 but I am sure it won't be faster. Below are numbers from Car&Driver or maybe Roa&Track:

Model Weight 0-60 1/4 mile

750 - 4,552 - 5.7 - 14.2/103
S550 - 4,465 - 5.6 - 14.1/102

550 - 3,925 - 5.2 - 13.5/105
E550 - 3,885 - 4.8 - 13.1/108

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03-01-2007, 10:01 PM

#16

narvselius

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It's the six cylinder engines that benefits from direct injection, the V8 is basically the same. What the V8 benefits from is partly the new auto transmission and other save reducing features, such as the electronically steered generator.

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03-02-2007, 12:48 AM

#17

AlexFW

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Quote:

Originally Posted by Ricracing' post='397249' date='Mar 1 2007, 09:26 PM

550i Pre-LCI......... LCI +/- %
CO2 267............... 260...... -7 -2.62%
Urban 17.2 ............17.0..... -0.2 -1.16%
Extra-urban 35.3 ...37.2 .....+1.9 +5.38%
Combined 25.4 ......25.9 .....+0.5 +1.97%
0-62mph 5.5 ..........5.2 .......-0.3 -5.45%

550i Auto Pre-LCI ...LCI +/- %
CO2 260 .................246 .....-14 -5.38%
Urban 17.8 .............18.2 .....+0.4 +2.25%
Extra-urban 36.2 .....39.2 .....+3.0 +8.29%
Combined 26.2 ........27.4 .....+1.2 +4.58%
0-62mph 5.6 ............5.3 ......-0.3 -5.36%
Sorry for the mess...

0.3s on the 0-60 ?
Impossible ... They would be 30 HP .
Simply they now declare 0.3s less ..

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03-03-2007, 07:15 AM

#18

grogan545

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Quote:

Originally Posted by Veight' post='397186' date='Mar 1 2007, 12:46 PM

I noticed in a recent post on the engine comparisons in the LCI (08) vs. the MY07 that although the same 360 hp V8 engine remains in the LCI, that the 0-60 time is faster and the engine consumes less gas.

I am wondering if this is achieved through a software tweak, or is some hardware being modified.

I want to apply this , if possible to my 07 550i.

Anyone have information on this MY08 improvement?

I would bet that the acceleration and mileage improvements are due almost entirely because of the new step transmission.I always thought that the slow and soft shifting of my 2004 545I hindered my 0-60 and 1/4 mile times.There seems to be an unnecessarily large pullback of HP & torque in my 545I between shifts.I haven't driven a new step yet but the 335I guys report that it is much faster and crisper shifting than the previous step.I don't know how this translates for the manual trans but i can certainly see why the step would improve.

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03-03-2007, 09:33 AM

#19

Ricracing

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My Ride: My ex-ride: EU '08 LCI 520dA. Space Grey, Sport Seats in Black Leather/Fabric Anthracite, Sport Steering Wheel, A/C with Extended Features, Hi-Fi Speakers, Cup Holders, Cruise with Braking function, Folding Rear Seats, Xenons, Park Distance Control.

Please note that both the manual and auto has improved 0.3 s in the 0-60 mph acceleration.

There theoretical top speed is way over 250 km/h (limited top speed) anyway,
so why wood BMW not tighten the ratios a bit?

The V8's have had the gas DI since 545i!

It must be that the gearbox ratios are changed a bit plus new parts and tech in the opper block (valves)
and some new programming.
I'm also sure that only upgrading the Progman doesn't do the job.

Now the 545i is for sure slower than the LCI 550i!