Direct Injection!
 

I think it would of been nice if Nissan had direct injection or does it? If not, it should of. I would think that would of added more power to the car. Probably closer to 350hp.

I'm sure they will eventually... at least I hope they do.

Nissan neo di engines
 

Look for engines ending with "DD" for direct injection and ignition.

Nissan VQ engine - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/File:VQ25DD.jpg

Car and driver reports that the g37 and m will get direct injection soon. So the z should get it my 10 or 11. They speculate 340-350hp.

if that is the case then i will definitely wait till 2010 or even 2011 to get the 370.

saw the same thing reported on autoblog. another reason for me to wait. (as if money wasn't the main factor.)

Yup! Makes me feel okay about having to wait longer to save up a nice big down payment

2009 you get a $ 2,500 tax rebate for the purchase of a new car.

Why not ???? 3 years of ownership on this model .... will be just the right time to swap for another.

Doesnt adding D.I. make it harder to upgrade your fuel system? Isnt that the problem they are having with the BMW I-135 running out of fuel past 6k

Who knows. Even though I asked the question I really don't know what it does. Or how it generates more power. I just read it in various magazines.

"The direct-injection V6 is also expected to find it’s way in to the G37 model once it is due for a mid-cycle refresh. And you can be sure the same powerplant will be used in a mid-cycle update for the 370Z."

Source

Oh WTF! This car will get better in a year and It overheats at the track!? shouldve kept my friggin 350Z....:shakes head:

Tax Rebate?
 

Where did you read about the Tax Rebate? I am curious to see how I can recoup some of the costs from this year.

In Stock it overheats? Can you expound please?

I'm no expert but I assumed you still used injectors and could just swap to larger ones. Then your only limit is the flow rate of the fuel pump itself.

Maybe the 40th anniversary model will get the direct injection when in comes out in Jan? The 35th anniversary model got the new v6 while the other z didn't until the following year.

2012 model with had D.I. the nismo model will also have the D.I. but that is all

Yea I agree here it said the Z would have it for its refresh. Which about 3 years so that means the new G's will probably have about the same performance numbers as the Z when they get D.I.

In three years it will be time to purchase a new Z anyway :) I had my last vehicle for 1 year 9 months lol.

:iagree: 4 years or about 50K miles and I will be ready just as well.

If the same fuel pump woes follow the Z with direct injection then I am happy not to have it. I kept waiting for the fuel pump to fail on my 335.

Direct Injection is fantastic. High fuel pumps and upgrades galore. This is old technology....surprised this is not on an 09 vehicle at this point in time, especially such vehicles as the Z. I would be surprised if this is not include in the 2010 model year.

I agree it should of came with it. Hopefully it will come in the 2010 model.

My Mazdaspeed6 was DI. I wasn't impressed (at least not by the fuel system).

Nissan Green Program 2010
Green Car Congress: Nissan Announces Green Program 2010; Aggressive Plan Includes Clean Diesel, Fuel Efficiency, Hybrids, Plug-in Hybrids and EVs

"Combining direct injection gasoline engine with Variable Valve Event & Lift System (VEL) for V6 and V8 engines."

I'm patiently waiting for DI and more aftermarket offerings

It keeps the fuel spread out nearly perfectly in the cylinder, encouraging more complete combustion, which increases efficiency in the sense of more power (since more fuel burns) and cleaner exhausts (since more fuel burns). This is versus mixing fuel into the air at the throttle body area (well, a bit more past it). Fuel can "clump" so there are concentrated pockets of air and fuel mixtures, making combustion uneven and inefficient.

In general, it is significantly easier (chemically / stoichiometrically) to burn perfectly vaporized fuel than if were in a liquid state. Gasoline aerosolizes in air though, so it's difficult to observe in real time.

Direct injection is damn near the best thing you can get in any engine. But as mentioned before, a bad fuel pump or atomizer / injector will ruin any possible horsepower gain.

A good DI system provides good gains across the band, but particularly in high RPM ranges, giving good top end power (obviously, fuel has less time to spread out, so a good injector can do this better than a premixed engine, like the sequential mixer we have in the VQ37VHR).

Special Tax Break Available for New Car Purchases This Year

thats for the tax break.

Audi (and others, I believe) have noticed some issues with direct injection. Without fueling going over the valves, nothing is "washing" them. Some of the Audi FSI (direct inj) motors are having valve issue. The build up is likely realed to the PCV, the EPA requires the motors digest the crankcase vapors. So I am not too excited to get a direct inject motor until these issues are resolved....be it valve coatings, secondary injectors in the intake, "scheduled" seafoam treatments....something.

Nissan Introduces New Dual Injector System - Worldcarfans
Nissan introduces a dual injector solution for small motors. On sale in the 2010 fiscal year

Nissan needs to hurry up and release DI for the V6! I hate waiting.

From what i havevread on the net (bitog) direct injection ,while increasing power etc, really causes problems like very dirty engine internals. there was Porsche Cayenne v8 engine that looked like it was dead due to the amount of carbon buildup and it also affects Audis too. So I am not too upset that Nissan did not offer this new tech. Maybe it needs more work before Nissan will use it.

The 2500 rebate was obamas 1st tax break. It was national news now in february.
The dealership is supposed to waive ur tax up to $2500 on site of purchase.
Unlike the real estate $8000 credit the car credit is instant.
And if u have an old clunker. You can get up 2 another 4500 if u give it up.
So right now there's up to 7000 in money u can claim depending on ur situation
And what kind of car you will purchase. 09 is free cash year. Lol

Special Tax Break Available for New Car Purchases This Year

For those thinking about buying a new car this year, this deduction may give them a little more drive to make their purchase this year,” said IRS Commissioner Doug Shulman. “This deduction enables taxpayers to buy now and get cash back later on their tax returns

Where you getting your info dealers are waiving the tax fee's at?

carbon buildup is a known problem for all DI engines (porsche, bmw, audi, vw...), but for some reason it doesn't happen to all of them. obviously it didn't stop nissan form putting DI into G37. i guess the power gain and better fuel economy/emission justify the number of potential engines they have to clean out. hopefully they'll have a fix by the time nissan puts it in Z :ughdance:

G37 uses DI? Didn't know that. I wonder why they didnt put it in the 370Z. It's the same engine. I wonder how much HP gain it will get.
If 370z ever gets the DI, it would probably be around 2012. To bad they don't do it now.

no DI on the G where did you hear that from?

Really?

I thought it was a tax credit back depending on what you paid based on the taxes that went to state....

For my case, it'd $1317, since my TT&L was that much...

Um no dude. You still have to pay state sales tax and any FET at time of purchase, you just get that amount back from the feds at tax time next year. Read the IRS bulletin.

ETA: Never the less, good news.

G37 gets DI 2010

i noticed that my wording may have been ambiguous. i meant to say that it didn't stop nissan from making the decision to put DI on G37

Where did you find the information pertaining to trading in an older vehicle?