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Showing posts with label NISSAN. Show all posts
Showing posts with label NISSAN. Show all posts

Nissan GT-R: Launch Control is Dead, Long Live VDC

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In a letter sent to its dealers earlier this week, Nissan USA outlined changes it is making to the 2010 Nissan GT-R and the remaining stock of 2009 models. These changes affect all GT-Rs sold globally and are designed to specifically address the controversy surrounding Godzilla's much-hyped transmission issues.



What are these changes? We spoke to our sources inside Nissan for clarification and here is what they told us: essentially, "launch control" is no more -- though you'd never hear Nissan put it that way. From the beginning, it has never formally recognized the term, preferring instead the more inscrutable "VDC Off" terminology.

Nissan GT-R side view

Nissan claims to have performed a software update to the transmission control module (TCM) with the goal of removing any real or perceived performance advantage gained by turning Vehicle Dynamics Control (VDC) off. In its place, Nissan says the update will allow the GT-R to shift smoother and accelerate faster in "normal" (VDC on) mode. As far as Nissan USA is concerned, the changes are aimed at improving the car's overall performance and boosting customer satisfaction.

What does this really mean? Let's recap. Recall that with VDC on, we found that powerbraking (applying the throttle and brake simultaneously) the GT-R would send its 480 horsepower engine spinning to roughly 1800-2000 rpm. Releasing the brake would send the GT-R accelerating at near supercar speeds -- as quick as 3.9 seconds to 60 mph as we found out last year.

Engaging "launch control," that is, turning VDC off, setting transmission and suspension switches to "R" mode, and powerbraking the GT-R would send the engine to about 4500 rpm and result in much quicker acceleration. We recorded a blistering 3.2 seconds to 60 and 11.6 sec @ 120.0 mph in the quarter mile.

Unfortunately for Nissan, plenty of controversy -- both real and imagined -- has cropped up regarding the failure of several GT-R transmissions when launching the car with VDC turned off. After much speculation as to how Nissan would respond, now we have the answer.

Nissan GT-R front three quarter view

With the software changes, you can expect to find the maximum performance of the updated GT-R approaching what the first batch of cars could do with its VDC off. Nissan claims the retuned GT-R will be quicker than the old version in day-to-day situations such as flat-footing it from a stoplight.

While you can still turn VDC off (it's recommended only for situations when the vehicle is stuck), the idea is that there will be no real advantage to doing so. Since Nissan no longer suggests any performance gains with VDC off, why would you do so and risk damaging a very pricey transmission?

So what kind of numbers will an updated GT-R turn in now that the fix is in? You'll know when we get our hands on one, but an educated guess would be somewhere around 3.5 sec. or so to 60, and about 12 seconds in the quarter, with powerbraking launches somewhere in the 3500 rpm range.

If you're already in possession of a GT-R or are on the list to get a new one, here is what the changes mean to you:

For existing owners, expect to see a letter in your mailbox as part of customer service initiative. It will probably invite you to return to your Nissan dealer for the TCM software update and provide details as to what is involved (and if you get one send us a copy). Nissan tells us the service is free of charge and should be relatively quick.

Nissan GT-R steering wheel

If you're a prospective GT-R buyer, your 2009 or 2010 GT-R will ship with the update so no action will be required on your end.

Whether you're the former or the latter, know that there have been no changes to the language or spirit of the GT-R's warranty. Nissan still guarantees the performance of the GT-R provided certain guidelines are met.

More information on this story as it breaks. Stay tuned for our first full test of the newly updated GT-R - with VDC on and off.

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My Take On the 2009 Nissan 370Z

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Drove the new Z home the other night, then took a morning spin across Mulholland Drive. My take? I like it. The car rubs me the right way. It’s not perfect, but Nissan has nicely sharpened-up its famous sports two-door -- and greatly enhanced its flight deck.



2009 Nissan 370Z

By now most of you have undoubtedly read fellow MT’er Ron Kiino’s first test. At the track, the new Nissan blazed through our performance trials: 0 to 60 mph in 4.7 seconds, the quarter in 13.3 at 105.7 mph, maximum lateral grip a face-distorting 0.99 g. So, yes, the numbers are there.

What the stats don’t reveal, though, is how the Z has moved upscale. The new cockpit is gorgeous, with rich-looking soft-touch materials and mostly astute ergonomics. Nissan’s navigation system (optional) is one of the best on the market, both intuitive to set up and easy to interpret. The seats are terrific, proffering deep bolsters and trimmed in a grippy, good-looking cloth (leather is available). Big thumbs-up to Nissan’s designers for getting the seat controls right, too: fore-aft and seatback recline are power-controlled, while seat-cushion angles are manually configurable via two large, well-placed rotary knobs. As before, the primary gauges move up or down with the steering wheel (though the wheel doesn’t telescope), ensuring that the dials are always easily visible.

2009 Nissan 370Z cockpit

I noted only a couple of minor interior quibbles. The temp and fuel-quantity displays on the left of the dash are a row of orange LEDs that wash out in bright sunlight (you have to use the shadow of your hand to read them). And as far as I can tell, if you want to connect the available iPod interface cord in the center console, you can’t re-insert the plastic cupholder tray that normally fits there. Nor is there any convenient place to stow the tray when it’s removed. Apparently, you cannot enjoy your iPod and a chai soy latte, too (actually, is that ever possible?).

My dash across Mulholland confirmed the Z’s massive grip levels and revealed its excellent steering feel. I also got to play with the car’s innovative "SynchroRev Match" feature, which blips the throttle automatically whenever you move the gear lever for a downshift. If you’re accustomed to doing your own heel-and-toe downshifting, as I am, it takes a moment or two to break yourself of the habit of moving your right foot while braking for a manual throttle blip. Instead, just keep your foot firmly on the brakes and let SynchroRev Match make you look like Lewis Hamilton. The system works remarkably well, though if you insist on being a shifting purist you can simply turn it off.

2009 Nissan 370Z

The updated VQ six pulls really hard to its 7500-rpm redline, though there’s enough torque on tap (270 pound-feet) to keep the boil on even at lower revs. Yet Nissan still has some work to do on engine refinement; at higher revs, the exhaust gets coarse and you will feel some tingles through the pedals and wheel. Colleague Angus MacKenzie describes the Z’s NVH as “just awful,” but I wouldn’t go that far. True, this is no syrupy BMW six under the hood, but I didn’t mind the engine rasp when gunning hard. Adds a little raw flavor to the driving experience. And at cruise the Z is fine.

I’m impressed by the Z’s solidity. The structure hangs tough in hard corners and remains composed over rough roads. And while the rear tires were clearly fighting to stay planted in every corner -- I could see the traction/stability dash warning firing away -- the electronics didn’t intrude. And I was driving the Touring model. With Sport Package, the Z undoubtedly feels even edgier.


At a base sticker of $30,625 and an as-tested price of about $34K, the Z returns a whole lot of curvaceousness and kick for the dollar. It’ll be a strong player in a class including the new Camaro, Mustang, and Solstice Coupe -- can you say “comparo test?”

Stay tuned. And have a great Thanksgiving.

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NISSAN

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Auto enthusiasts already know what’s hot at Nissan for 2009. It’s the GT-R, a fifth-generation Nissan Skyline coupe that finally comes to the States after four iconic generations in Japan.

As exotic a Japanese car as could be, the GT-R has awesome power from a nearly lag-free 3.8-liter, twin-turbo V-6 that generates 480 horsepower and 430 foot-pounds of torque. In fact, the zero-to-60-mph time is well under 4 seconds. Front seats in the GT-R hold riders in place while the suspension, standard all-wheel-drive and the grip of 20-inch performance tires make this car ride like it’s on rails.

Alas, the GT-R has the distinction of being the most expensive Nissan ever sold in the States, with a starting price, including destination charge, of $70,850. And only a couple thousand GT-Rs are planned for sale in this country annually, because demand in Japan and Europe is high, too. So don’t be surprised to see some bidding up of the price.

Also for 2009, the Murano SUV is revised as a second-generation model with more power and options. The 3.5-liter V-6 delivers 265 horses now, as well as 248 foot-pounds of torque. Power folding and heated rear seats are a new option along with 9.3-gigabyte music hard drive.

The five-passenger Maxima sedan arrives in 2009 with new styling, a more aggressive stance and improved performance and handling. Power comes from a 290-horsepower, 3.5-liter V-6 with 261 foot-pounds of torque meted out to the wheels via a continuously variable transmission.

Nissan’s Xterra SUV and Frontier are refreshed by new front styling and wheels, while the 370Z coupe is revamped with a more powerful 3.7-liter V-6.

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