en | fr | de | it | es | pt | ru
blog.niot.net
BMW owners claim software update degrades performance

BMW's N54 engine has won the International Engine of the Year award for the past two straight years. It has also been listed as one of Ward's 10 Best Engines during the same period. The engine produces 306 hp and 295 ft-lbs of torque in a 3.0L inline six package thanks to the use of twin Mitsubishi turbochargers and direct injection. The N54's quick response and smooth torque curve has been an attraction for many enthusiasts, including myself - I call my Montego Blue coupe the turbo Cookie Monster. That is why a few BMW 335i owners are miffed by a feeling of reduced performance after a recent service update. Posters on the BMW forum e90post.com claim that a software update to adjust rattling wastegate valves has induced lag into the turbochargers that wasn't there before. As illustrated in the gallery below, the N54 turbochargers differ from most setups in that the wastegates default to the open position. This allows for better emissions due to the ability of the exhaust gas to bypass the turbochargers on start up so the catalytic converters can heat up faster. It certainly follows suit that BMW has the ability to adjust the ECU settings in order to hold those wastegates open, thus altering the turbochargers' peak boost point and adding to the perception of lag. Currently all performance degradation discussion has been based on seat of the pants feel, along with increased exhaust noise and fuel consumption. Despite the claims, BMW North America and service centers have, thus far, found no critical issue with the new settings. If owners want to present true evidence, they should use a simple OBD scanner device to data log the manifold pressure or simply run a dyno comparison test.
posted : 9/2/2008 @6:31:06 PM
BMW Sauber discovers cause of KERS shock

According to Team BMW Sauber, it has "concluded their investigations into the KERS incident at Jerez." Incident? You mean that time when one of your mechanics was literally thrown to the ground after doing nothing more than touching your car? Right, that one. If you are truly interested in reading all of the techno-babble regarding why the experimental KERS hybrid system reached out and touched someone, click past the break for the details. Here are the highlights: It was an accident. The KERS control unit malfunctioned. Nobody was seriously hurt and nobody was ever in any real danger (Dr Evil: Riiight...). Christian Klein, the driver, was insulated from any shocks due to his race suit and gloves. BMW Sauber has apparently fixed the problem and feels confident that it will be ready to continue testing in the Autumn. Recently, the BMW team voted in favor of running the KERS hybrid system for next year's race season, so it'll have to be ready to go sooner rather than later.
posted : 9/2/2008 @6:11:01 PM
BMW F 650 GS gets reintroduction to the U.S.

BMW Motorrad has had a 650cc off-road-ready adventure bike in its line since 2000, but the new one for model year '09 is vastly different than its predecessor. The bike is completely new and highlighted by a new parallel-twin engine that now displaces almost 800cc -- the same as the more powerful but more expensive F 800 GS. The two models differ in their specific engine tuning with the 650 producing 71-horsepower at 7,000 rpm and 55 lb-ft of torque at 4,500 rpm and the F 800 GS offering up 85 bhp at 7,500 rpm and 62 lb-ft at 5,750 rpm. Unlike most BMW motorcycles that use a shaft drive, the F-Series GS uses a more rational chain for its off-road durability and interchangeability. A steel trellis frame mates with a double-sided swingarm to offer a stiff chassis and the fuel is mounted below the seat for a low center of gravity. Pricing begins at $8,255, though adding the Standard Package quickly raises the asking price to $9,760. You'll want that package as it includes heated hand grips, anti-lock brakes, an on-board computer, and (who cares?) white turn signals.
posted : 9/2/2008 @6:04:25 PM
Stillborn: 1989 BMW M5 convertible

These days BMW's M division is pretty busy, cranking out all manner of sport-tuned models in every form. You can get an M3 as a coupe, convertible or sedan, the M5 in sedan or wagon form, and the M6 as either a coupe or a convertible, in addition to M versions of the Z4. But back in the late '80s, the selection of M cars was much more limited. Not that the engineers in the sporting division weren't trying, though. Case in point is this M5 cabrio prototype that almost made it into production, but was canceled at the last minute. Starting with an E34-generation M5 sedan, engineers in Munich chopped off the roof, strengthened the chassis and replaced the four doors with two longer ones. (If you think the idea is entirely absurd, just look at the Audi A4 cabrio and its quattro GmbH-tuned versions.) The resulting M5 convertible prototype was actually scheduled to debut at the 1989 Geneva Motor Show and even priced at £50k for the British market, but fearing that its addition to the BMW line-up would create demand for a conventional 5-series convertible and subsequently harm sales of the existing 3-series cabrio, BMW executives decided to kill the project.
posted : 9/2/2008 @5:44:49 PM
BMW bumps its prices for 2009

High commodities prices and the unflattering value gap between the Euro and U.S. Dollar are forcing a lot of European automakers to bump their prices here in the States. We told you a few weeks ago that BMW was planning on raising the sticker price on many of its products, and now we're starting to see the extent of the damage. The price changes range from an increase of $600 on a 128i to $1,400 on an M6. The 335i received several MSRP increases, with the sedan going up by $800, the coupe by $1,200, and a raise of $1,300 for the convertible. The 328i sedan, meanwhile, rose $700 to an MSRP of $33,400. Options also went up in price, as the dual clutch on the M3 has gone up by $200 making it a $2,900 option. The sport package for the 335i sedan and coupe has risen by $450, and some standard equipment like the Logic 7 Sound System has been nixed for 2009. Beginning in October, iPhone integration can also be had for $150. Since $150 is almost the price of the phone, that one smarts just a bit.
posted : 9/2/2008 @5:37:11 PM
Never Enough: Dinan to shoehorn 628-hp V10 into BMW M3

Ever meet one of those parents who are never satisfied no matter how well their kids do? The child comes home with a 98% on a school exam and the parent asks "How'd you lose two percent?" Dinan is one of those parents. But instead of overstressed children, Dinan produces overachieving performance automobiles. Take, for example, the latest M3, which BMW unveiled with a V8 derived from the award-winning 5-liter V10 found in the M5 and M6. The eight replaced the inline-six on the previous model, but instead of remaining content to say "good job on the extra two cylinders", Dinan asks what happened to the extra two from the V10. Not that they would have been happy with the V10, either. On that, Dinan pushed and pushed, boring and stroking out the engine's ten cylinders until they got it up to 5.7 liters and 628 horsepower. Pretty sick, but saddled with the heft of a BMW 5 or 6 Series, Dinan couldn't help but ask what would happen to its pride and joy in a more suitable setting. Word has it now that Dinan is preparing to shoehorn in its 628-hp concoction into the M3's engine bay. Thankfully they'll be lightening it up a little after that, removing some of the bulk from the front end in order to keep the weight balance in check. We can't wait to see what it can achieve.
posted : 9/2/2008 @2:20:28 AM
BMW recalls 200,000 vehicles over issue with front passenger air bag

BMW is recalling 200,000 units of its 3 Series, 5 Series and X3 SUVs to repair potentially faulty air bag sensors. The National Highway Traffic Safety Administration website says the recall campaign covers 2004-2006 5 Series, 2004-2006 X3 and 2006 3 Series vehicles, though only those equipped with sport seats.Apparently the problem is with the front passenger sport seat that, over time, develops cracks in its covering. An air bag sensor beneath the area can then be damaged so that the car no longer senses the weight of a passenger. That means, of course, the passenger airbag might not be deployed in an accident.BMW is doing the right thing by quickly addressing the issue even though no accidents or incidents have been reported in relation to the problem. Also, according to NHTSA, the company will extend the warranties of several of BMW models to cover the issue for 10 years with no mileage restriction. A summary of the recall No. 08V384000 is available here from NHTSA.
posted : 8/31/2008 @4:38:04 PM
BMW announces new Edition Sport for 6 Series

BMW has responded to customer demand for a tauter 6 Series by announcing the availability of a new Edition Sport trim level for the grand tourer. While the new Competition Package offers a host of modifications for the M6, the Edition Sport follows along the same lines for the rest of the 6 Series range, including both coupe and convertible models.The package includes a restyled hood and new lightweight 19" alloys, plus stiffer anti-roll bars and the anti-roll stabilization system borrowed from the M division. Brushed aluminum trim for the cabin and fog lights also form part of the Edition Sport, along with a couple of new colors. The 650i Edition Sport also benefits from a new exhaust system. Pricing and availability have not yet been announced for the US market, but the package commands a £1500-2000 premium in the UK.
posted : 8/30/2008 @4:43:52 PM

Track Daze: Project 318is at Buttonwillow, Day One

Imagine your perfect track day. A dozen cars, dry tarmac and absolutely zero loose nuts behind the wheel. That's been our experience so far at Buttonwillow. We've had the pleasure of being invited to a private track event organized by Jack Fried, co-creator of the Lotus Challenge Series and all-around genuine gent. For the majority of Friday, the track has been open, so whenever the urge strikes, you just head out and go. With only a half-dozen vehicles on the track at any given time – primarily Porsches and Loti – we're in our own private nirvana. And Project 318is is holding its own, despite being thoroughly outclassed by the rest of the field.

The H&R Cup Kit had paid for itself three-times over before noon. Body roll is minimal, transitions are easy to gauge, and coupled with the lightweight Koseis and Advan A048s we fitted this week, the Bimmer has achieved its goal: providing us with a competent track tool that proves the old adage about driving a slow car fast.
more ...

posted : 8/9/2008 @5:36:00 PM

Project Track Slut Update: Prepping for the big day days

As I type this, our BMW 318is is up on the rack, sans transmission, to replace the clutch and all the assorted bits that go along with the job. The last-minute clutch work, along with fitting a set of Hawk HPS brake pads and replacing the brake fluid with Castrol GTLMA synthetic, is all in preparation for our two-day track assault this weekend at Buttonwillow raceway.

We'll be running configuration 13 on Friday and Saturday, and plan to keep you updated over the weekend on how the Slut is holding up to our relentless flogging in 100-degree heat. Along with the upgraded pads and fluids (not to mention the H&R cup kit we installed in our previous post), we've managed to score a set of Kosei K1 wheels (+42mm offset), sized 16x7-inches and weighing 15 pounds from the TireRack for the bargain-basement price of $129 a piece. Needless to say, closeout sales rock, and with the TireRack offering Advan A048s (medium-hard compound) sized 225/50ZR16 on special for $149 per tire, we snatched up four new gumballs for track duty. They've been heat-cycled and mounted, and after a spending a few days on the Bimmer, we're convinced that our nerves will give out before the tires do... for the first few laps, at least.

posted : 8/9/2008 @4:17:21 PM
< back ( 1 2 3 4 5 ) next >
:: new posts
:: popular posts
copyright 2007 (C) - powered by ceastudio