When the BMW 335i arrived in 2007, tuners jumped at the chance to boost the boosted 3.0-liter inline-six. After a few ECU tweaks, the new 3 series was putting out an additional 70-80 hp and a commensurate increase in torque, and once the 135i and 535i arrived, the market grew accordingly. Recognizing that owners are willing to let their new rides go under the electronic knife, BMW has decided that the aftermarket shouldn't be the only avenue available for drivers looking for more punch from the twin-turbocharged 3.0-liter. The automaker will begin offering an upgrade for the 135i, 335i and 535i in Europe, and it's rumored to be available in the U.S. sometime in April.
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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.
The 2009 BMW 3-series will be revealed in all its facelifted glory at the Paris Motor Show and sales will begin across North America this October. The only discernible differences up front are a new fascia that apes the recently unveiled 7-series, new headlamps with "altered graphics," a contoured hood and modified mirror housings. Out back, the subtle changes continue, with a new taillight design that integrates more cleanly into the trunk lid and a reworked bumper that will join a one-inch wider track on high end version of the 3-series.
Inside, you'll find a revised armrest on the driver's side door, an updated iDrive controller and software, a high-resolution 8.8-inch screen, with options for an 80-gig hard drive that can store MP3s and the sat nav software.
The 335i's (claimed) 300 hp, 3.0-liter twin-turbo six will remain, as will the 328i's 230 hp, 3.0-liter inline-six. The new addition to the family is the 335d, which is packing a 265 hp, twin-turbo 3.0-liter straight-six diesel, equipped with urea injection to keep the U.S.'s SMOG sniffers happy. However, if you were hoping for a 335d coupe, you're out of luck – the oil burner is only available in the sedan and fitted with a six-speed automatic transmission. Otherwise, the tranny choices will include the six-speed manual or six-speed auto 'box. However, Autoweek makes no mention of the DCT gearbox. Too bad.
The 2008 BMW M3 won't be the only 3-series to get Bavaria's newest dual-clutch gearbox. According to documents leaked out of BMW's Australian arm, the 2009 335i coupe will be available with a revised version of the DCT gearbox, at least Down Under... for now. The dual-clutch transmission is the same unit fitted on the V8-powered M3, but some changes to the software are planned to better suit the turbocharged, 3.0-liter inline-six powerplant. There's no word on when the DCT gearbox will be available on U.S. shores and we don't know what kind of premium the seven-speed tranny will carry, but a DCT-equipped M3 commands an additional $2,700 over the six-speed manual, so expect a similar price when the revised 335i goes on sale, likely later this year.
While BMW's 335i Touring has been spotted testing in the California Desert, don't expect to see the 300-hp five-door in showrooms anytime soon. BMW has again confirmed that the 328i Sports Wagon, with its 230-hp powerplant and a choice of rear- or all-wheel drive, will be the most powerful 3 Series wagon in the States in the immediate future. We are not surprised, as this follows BMW's trend initiated when they launched the E46 3 Series Touring to the U.S. market in 2001. That model, like the current version, was never fitted with anything but the entry-level six-cylinder engine. Those who crave BMW's award-winning twin-turbo six-cylinder under the hood of their family hauler can opt for BMW's 535xi Sports Wagon. The engine, and all-wheel drive, are standard.
For those fond of delving deep into E90 minutiae, these are the best shots yet showing off the subtle changes coming to the BMW 3-series. For the rest of us, the tweaks are largely inconsequential. World Car Fans has unearthed some of the clearest shots yet, and the change that most people will notice are the taillamps, which look to get a slightly different shape. It even appears that the cutlines between the taillamp pieces on the trunklid won't line up with the rest of the cluster mounted in the quarter panel - asymmetry. The mirrors look to gain large repeaters for the blinkers, possibly just a camouflage ruse, and minor updates likely go on inside and underhood, too. Also likely to be quite noticeable once the wraps come off is a reshaped front fascia, which appears to place foglamps next to the license plate. Overall, a mild refreshing until a new 3-series can be whipped up. In the meantime, the new 7 will set the template for BMWs to come.
This is a head-to-head battle we've been waiting to see: BMW's new M3 versus a Dinan-tuned 335i coupe. But we're only going to talk numbers and let the video tell the tale.
The BMW 335i has proven itself as a credible player in the sports coupe segment, particularly with a tweaked ECU to extract maximum output from its twin-turbo'd 3.0-liter inline-six. Dinan announced its Stage 3 package a few months back, which includes a fully-adjustable suspension and a handful of engine mods that bring output up to 406 hp and a kidney-punishing 460 lb.-ft. of torque (at 4,300 RPM). But it doesn't come cheap. All the necessary Dinan kit to get it up to Stage 3 spec (and get that nifty badge on the boot) costs around $14,000. But compared to the $71,000 $56,500 (no mark-up, no oxygen) base price of the new M3, it's still a steal. While the M3 has the peak horsepower advantage, you can't ignore the allure of the Dinan 335i's torque and lower curb weight.
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We reported exactly one year ago today that an Audi A5 convertible was in the works. Word's out now that the upcoming drop-top will be manufactured in Neckarsulm, a city in northern Baden-Wurttemberg, Germany. The Audi RS 4 will be the new A5 vert's assembly line buddy at this plant.
The new topless Audi will most likely be fitted with the 3.2-liter FSI V6, which will square up the car nicely with the BMW 328i convertible. However, when the rumored 354-hp V8 S5 convertible shows up, it will go head-to-head with the twin-turbo six-cylinder 300-hp BMW 335i convertible. Unlike the Bimmers with their folding hardtops, the Audi convertibles will have electric soft-tops to save weight (and cost, no doubt). The A5 convertible isn't expected to debut until January 2009 at the Detroit Auto Show, and we've already got our hotel rooms booked (just kidding, we're so not that organized).
