"BMW 3 Series Coupe gets new engine"

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BMW 3 Series Coupe gets new engine at http://www.washtimes.com/autoweekend/20060706-012226-5661r.htm

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Road test of it in this week's Autocar. Reckon it's as fast as an M3 in day to day conditions - you don't have to wring its neck to get some performance.
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Dave Plowman snipped-for-privacy@davenoise.co.uk London SW
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Mike wrote:

Article says: " BMW says that it has deliberately gone away a little bit from a pure sporty character and that a lot of attention has been given to comfort "without giving up sportiness." " wrt its softer suspension....sounds like a "Mercedes" compromise! Hehehe.....not sure if this is the way to go, as this is a BMW coupe not a sedan....but I guess it has to appeal to different segments and clientele to maximize marketability
Also I have a question here: why is it that BMWs and Mercedes have this electronic speed limiter? Porsche AFAIK does not have one, is that correct - although there is a 'top track speed' in its specifications....Not sure if this is right... does it have to do with the tires, or is it an agreement between the BMW-MB to prevent people racing down the autobahn at insane speeds?
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Pretty much.
My understanding it, and I don't have an authoritative source for this, but I understand it's a gentlemens agreement to limit top speed for the reason stated above.
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wrote:

Well, there is an interest at the factory to not blow the motor into tiny bits. The motor is protected at red line, and top speed in 5th gear is pretty close to red line. I think it's about 250 rpm below red line.
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What I don't understand is this from the article quoted:
"The acceleration from 0-60 mph takes 5.3 seconds with the 335i and 6.2 seconds with the 328i. The limited top speed of both the 328i and the 335i is 130 mph. With the optional Sport Package on the 335i, it is 150 mph. "
Very respectable # btw.
Sports package - used to be sports seats, more 8-way adjustable, M-tires, or M-suspension (depends on sports pkg or M-pkg), so how is this related to limited top speed? Maybe the tires or something.....
Jeff Strickland wrote:

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The Sport Package includes a 150 mph limiter vs. the normal 130. Tires are summer performance instead of "all-seasons".
http://www.bmwusa.com/vehicles/futurevehicles/new3coupe/techdata.htm
Tom K.
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Tom K. wrote:

That's my point though - not sure how a sports package will get a 150 mph limiter vs a 130 mph one i.e. what's preventing a 328i or 335i without a sports package from achieving 150 mph? Other specs look comparable. Unless BMW has to deliberately detune the engine for business purposes. Perhaps like Mercedes SL/CL 55's not same power as SLK/CLK 55?
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Software. The ECU is programmed to begin limiting engine output (through the same process the rev limiter does) as the speed is reached. It's not absolutely precise (you may achieve 152 or so). The engine just goes soft, speed drops off a couple mph and you're done.
BMW religiously follows the German Gentleman's Agreement regarding top speed: 155. Particularly for the US market, they limit speed as well for legal reasons. They're concerned some idiot will fit speed rated tires inappropriate for the car's performance and then sue when the tires fail at speed, hence limits below 155 on some cars. Dinan, Conforti and others modify ECU software to improve performance. One of the mods is the removal of the top speed limiter.
R / John
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John Carrier wrote:

Personally I wouldn't remove the speed limiter - don't get a chance to drive that fast anyway. INteresting though the article says, "The limited top speed of both the 328i and the 335i is 130 mph. With the optional Sport Package on the 335i, it is 150 mph. " so without the sports package the 130 mph is way more than gentlemen.
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The speed limiter is built into the engine ECU. It can be programmed out by specialists.
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RichAsianKid wrote:

Actually - it is.
BMW is making noises about the "activating of the features" for quite some time now. Wanna +30Hp? Just go to the dealership, write a nice check and get them "activated". And the twin turbo which is living under the bonnet of the 335i comes very handy.
Recently I saw a very interesting article in the "Aftersales", an internal newspaper for bmw emploees, dealers etc. It was discussing "activation" technology for the "value added options". As first example they mentioned "Night Vision", which you can order even after you buy the car. But it will only work after it is "activated". The dealership sends your VIN, the serial number of the camera and gets the activation key, which enables this particular camera to this particular car. They said they want to extend this in other areas as well. I think, that the biggest problem is the reliable encryption, yet foolproof enough to be suitable to be used remotely.
Actually I dont like it, since the next logical step is subscription. "+30Hp for the next 20000 miles or 2 years for just a $2000". "$300 for an annual subscription of Navigation". "$100 for the next 10000 miles with cruise control".....
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I don't understand the 'voluntary' speed restrictions makers apply in the US. Surely the standard tyres are rated way above these limits?
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Dave Plowman snipped-for-privacy@davenoise.co.uk London SW
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London SW

In the US, they furnish H rated tires for the standard car. That is 205/55R16. The speed limit for H tires is 128 mph. It would not be a good idea to let the car exceed the tire rating. Jim
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In the UK there is a blanket speed limit of 70 mph - no exceptions - yet the cars come with tyres suitable for the actual top speed of the car.
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Dave Plowman snipped-for-privacy@davenoise.co.uk London SW
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Dave Plowman (News) wrote:

One buys a car fit for purpose. whether you choose to use it on the road or not is up to you. I would guess there is european legislation as there are parts of germany at least where it's possible to legally do the top speed of the car.
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Wonder what tyres cars for the US - but picked up personally in Germany - are fitted with. ;-)
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Dave Plowman snipped-for-privacy@davenoise.co.uk London SW
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What I don't understand is this from the article quoted:
"The acceleration from 0-60 mph takes 5.3 seconds with the 335i and 6.2 seconds with the 328i. The limited top speed of both the 328i and the 335i is 130 mph. With the optional Sport Package on the 335i, it is 150 mph. "
Very respectable # btw.
Sports package - used to be sports seats, more 8-way adjustable, M-tires, or M-suspension (depends on sports pkg or M-pkg), so how is this related to limited top speed? Maybe the tires or something.....
Jeff Strickland wrote:

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I gather it's a 'gentleman's agreement' among BMW, Merc and some (not all, obviously) others to limit the speed to 250 km/h (155 mph happens to be the miles equivalent). Nothing to do with tyres or motors. I think the main reason is to head off German government moves to introduce a national speed limit on motorways and to stop mostly untrained drivers driving so ridiculously fast on public roads.
I have been at (an indicated) 220 km/h in my 3.2 l car, but for no more than a few seconds because other traffic gets close mighty fast and I wasn't prepared to overtake at that speed. I wonder what might happen if I had to take unexpected action.... <shudder>
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Probably correct. Porsche seems to be the only non-participant. U.S. market cars all have V-rated or better tires as original equipment. But there are idiots who will fit poor quality aftermarket rubber to the cars and then can find idiots with law degrees to represent them after their folly results in some mishap. Then the idiot lawyers in robes allow the litigation to proceed to 12 more idiots who believe the money they award to the original idiot and his representative (30% plus costs for a fee) comes from a "rich corporation" whose wealth comes not from doing business with citizens like themselves, but from a source similar to that of the manna of Exodus.
The bard had it right.

I've seen a needle-width over 240 (approx 150mph) in my old toy. Several miles of desert road with zero traffic. I've gone faster on the ground, but only with the intention of taking off or immediately following touchdown. The F-4 had pretty high liftoff and touchdown speeds.
R / John
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