Nissan 370Z Forum
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Nissan 370Z Forum (http://www.the370z.com/)
-   Nissan 370Z General Discussions (http://www.the370z.com/nissan-370z-general-discussions/)
-   -   Direct Injection! (http://www.the370z.com/nissan-370z-general-discussions/2780-direct-injection.html)

nicknick 07-14-2009 08:48 PM
Quote:
Originally Posted by tvfreakazoid (Post 44767)
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.
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.

need4speed 07-15-2009 12:59 AM
Quote:
Originally Posted by tampatip (Post 45333)
Where did you read about the Tax Rebate? I am curious to see how I can recoup some of the costs from this year.
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

Forrest 07-15-2009 03:16 AM
Quote:
Originally Posted by need4speed (Post 114489)
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?

baboola 07-15-2009 03:32 AM
Quote:
Originally Posted by nicknick (Post 114329)
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.
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:

tvfreakazoid 07-15-2009 04:02 AM
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.
Quote:
Originally Posted by baboola (Post 114590)
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:

shumby 07-15-2009 04:10 AM
no DI on the G where did you hear that from?

kannibul 07-15-2009 10:53 AM
Quote:
Originally Posted by 355890 (Post 45143)
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.
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...

GMZ 07-15-2009 11:13 AM
Quote:
Originally Posted by need4speed (Post 114489)
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
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.

baboola 07-15-2009 12:47 PM
Quote:
Originally Posted by shumby (Post 114600)
no DI on the G where did you hear that from?
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

Spikuh 07-15-2009 01:07 PM
Quote:
Originally Posted by need4speed (Post 114489)
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
Where did you find the information pertaining to trading in an older vehicle?

drisko 07-15-2009 02:27 PM
Quote:
Originally Posted by 370Z Purist (Post 112409)
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).
I believe the DI systems also make more power because the car can run a slightly leaner A/F ratio (the fuel amount is more precisely controlled).

Shane D 07-15-2009 05:36 PM
Nissan developing new type of fuel injection
 
Not sure if anybody here watches Autoline Detroit, but it is a quick daily dose of auto info. Todays story mentions that Nissan is developing a new fuel injection system, incorporating Dual Port Injection. Should debut in 2010.

Pretty cool system that give you six to seven minutes of auto news each day.

Check out:
Autoline Daily

Shane D

tolnep 07-15-2009 06:20 PM
Quote:
Originally Posted by GMZ (Post 114752)
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.
thats a deduction , not a credit .. say you are in a 50% tax bracket... and you pay 2000$.. you get around 1000 back i think is the way it works..

now a tax credit.. that would be cool. you owe 5000 in taxes, the 2000 reduces the tax to 3000.. basically you get 2000 bucks back that year...

and i think that's one thing they outta do for the housing industry is give some large tax credit to purchasers, which they could then spread over more than one year... but the obama plan is to put money into public works mostly which employs some lower wage earners to do things like build roads and schools and they in turn buy more 12 packs and lottery tickets which doesnt help the economy much and of course the banks got money but they dont want to lend it out anymore..

so now i get off my soapbox....

whoady4shoady 07-15-2009 07:06 PM
Quote:
Originally Posted by need4speed (Post 114489)
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
I never heard antyhign about the dealers waiving the tax fee instantly. I only read that you may get it back on tax returns.

avitech 11-28-2009 12:39 AM
It would be nice if Nissan would offer the 370Z with Direct Injection. What I would like to know is how it would be assimilated into the current V6 design. It might be as simple as keeping everything else but designing a whole new cylinder head(s) and engine fuel management system. Who really knows what they are up to. For all we know they are doing beta testing right now as I type in some laboratory in Japan. I could try calling the 800 number for Nissan customer service but the girl on the other end of the line usually doesn't know anything about the products. When they do add the Direct Injection. That's going to be the time to buy. If I were to get one now I would just lease since it's not D.I.. The future is in Direct Injection. The oil companies are reformulating their gasoline for it at the present moment. If they can make this work it would mean less pollution, more fuel efficiency, more horsepower, longer engine life, and money savings. It's a win win situation for everybody.


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