Direct Injection!

avitech · 11-28-2009, 12:47 AM

Quote:

Originally Posted by Mr. C

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.

This is bad news. Because Nissan is going for a cheaper approach instead of offering Direct Injection that increases efficiency by up to 20% instead they offer us just a fancier injector that splits the fuel two ways for an increased fuel economy of a measly 4%. Shame shame shame. It's like buying an air to air heat pump for your house instead of a fancier geothermal heat pump which is far superior. It costs more up front but saves you money in the long run. Nissan is going the cheap route. I wonder when they will ever join the ranks of automobile manufacturers with D.I.? Shirley they won't be the last to adopt it will they? It's like being the last car company to adopt fuel injection instead of carburetors. Progress is slow...

gleonard · 11-28-2009, 12:49 AM

Quote:

Originally Posted by Forrest

Special Tax Break Available for New Car Purchases This Year

thats for the tax break.

$3200 tax break, here I come!

avitech · 11-28-2009, 11:05 AM

Quote:

Originally Posted by gleonard

$3200 tax break, here I come!

The catch is that you have to rely on the government to reimburse you on this one. This could take several months to over a year. Government can be a real hassle at times.

theDreamer · 11-28-2009, 11:07 AM

Quote:

Originally Posted by avitech

The catch is that you have to rely on the government to reimburse you on this one. This could take several months to over a year. Government can be a real hassle at times.

Wrong, this tax break is filed with your yearly tax return, therefore it should not take any longer to get it, unless the gov't decides to audit you.

avitech · 11-28-2009, 11:20 AM

Quote:

Originally Posted by theDreamer

Wrong, this tax break is filed with your yearly tax return, therefore it should not take any longer to get it, unless the gov't decides to audit you.

Oh, well that is good news to hear. So basically you get the money back as soon as your taxes are filed and you mail the IRS your check. It's a good thing they don't just take all the money and then reimburse you for it at a later date. I'm sure some countries do this in order to profit off of the interest.

$3,500 buys a lot of premium gasoline for that 370Z.

kannibul · 11-28-2009, 05:28 PM

Quote:

Originally Posted by gleonard

$3200 tax break, here I come!

That's $3200 applied against your earned income, not a rebate or anything like that.

Ends up, for me, being about $50-100...depending on my final numbers...I think.

kevr6 · 11-28-2009, 06:36 PM

Quote:

Originally Posted by Island_370

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.

Plan to have scheduled induction services if you want Stratified Injection. Misfires become a way of life with this continents fuel quality!!

(VW/Audi Invention!)

Supragtsxr · 11-28-2009, 08:21 PM

Quote:

Originally Posted by 355890

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.

WHAT? What is this tax rebate u speak of? how do I get it? Info PLZ!! I bough my Z back in September. Is it too late??!?!?

gumpy · 12-22-2009, 04:31 PM

will you be able to buy a new engine and put it into the current z?

i'd really like DI, esp if the engine sounds better as well...

Daishi · 12-22-2009, 07:53 PM

Quote:

Originally Posted by gumpy

will you be able to buy a new engine and put it into the current z?

i'd really like DI, esp if the engine sounds better as well...

the engine wont sound better with DI.. generally all the vw's and cars with DI sound broken with all the loud ticking the DI injectors produce haha.

GTRFAN · 12-22-2009, 08:21 PM

Nissan should just get on with it and make the 400ZX turbo! Now that'll be worth upgrading to.

gumpy · 12-22-2009, 09:59 PM

Quote:

Originally Posted by Daishi

the engine wont sound better with DI.. generally all the vw's and cars with DI sound broken with all the loud ticking the DI injectors produce haha.

my dad's R36 doesn't tick at all... the engine sounds quite good actually...

i should see if there's a way to get that engine in the z =)

ianthegreat · 12-23-2009, 08:43 AM

QUOTE=Brazilbro;45183]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[/QUOTE]

Yes, it makes regulating fuel much more difficult. Custom intake manifolds can solve this, but you're looking at a completely new control system/ecu for the car. Horse Power Freaks are known to do this and are working on a package for the 335i currently.

The n54 isn't necessarily running out of fuel past any rpm range, you're probably thinking of turbo efficiency. So far the n54 is limited to around 440rwhp in it's current set up (stock turbos). Time will tell if they can push that limit with the stock turbos/fuel system. One company has ported the stock turbos and achieved 500rwhp+ on the stock system, but I think that's pushing it a bit.

In reality, turbo upgrades are right around the corner with all the new flashes available. Hope this helps! :]

Additionally, a SC'd or Turbo'd VQ with DI -

ianthegreat · 12-23-2009, 08:47 AM

Quote:

Originally Posted by alan93rsa

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.

haha +1

i'm actually dreading this as I'm at 34k original HPFP. I'm just waiting for it to die so I can reinstall my mods

spearfish25 · 12-23-2009, 09:27 AM

Holding out for direct injection is ridiculous. Get some bolt ons, you'll make the same hp and have the car now.

12-22-2009, 08:21 PM	#56 (permalink)
GTRFAN Track Member Join Date: Dec 2008 Location: Melbourne Posts: 586 Drives: 370z Titanium 6MT Rep Power: 17	Nissan should just get on with it and make the 400ZX turbo! Now that'll be worth upgrading to. __________________ My Zed

12-23-2009, 08:43 AM	#58 (permalink)
ianthegreat Base Member Join Date: Mar 2009 Location: TEXAS Posts: 171 Drives: 08 335i, 86 Ranger Rep Power: 16	QUOTE=Brazilbro;45183]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[/QUOTE] Yes, it makes regulating fuel much more difficult. Custom intake manifolds can solve this, but you're looking at a completely new control system/ecu for the car. Horse Power Freaks are known to do this and are working on a package for the 335i currently. The n54 isn't necessarily running out of fuel past any rpm range, you're probably thinking of turbo efficiency. So far the n54 is limited to around 440rwhp in it's current set up (stock turbos). Time will tell if they can push that limit with the stock turbos/fuel system. One company has ported the stock turbos and achieved 500rwhp+ on the stock system, but I think that's pushing it a bit. In reality, turbo upgrades are right around the corner with all the new flashes available. Hope this helps! :] Additionally, a SC'd or Turbo'd VQ with DI - __________________ JB4 - Helix FMIC - Forge Diverter Valves - UR CAI - RR Downpipes - Bastuck Exhaust - Devils Own Stage 2 Meth Kit - Fully Catless - 423whp 489wtq Last edited by ianthegreat; 12-23-2009 at 08:53 AM.

12-23-2009, 09:27 AM	#60 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1856	Holding out for direct injection is ridiculous. Get some bolt ons, you'll make the same hp and have the car now. __________________ 2013 Cadillac V-Wagon, RIP Z

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12-22-2009, 04:31 PM	#54 (permalink)
gumpy Enthusiast Member Join Date: Oct 2009 Location: Sydney Posts: 449 Drives: 09 370z white manual Rep Power: 15	will you be able to buy a new engine and put it into the current z? i'd really like DI, esp if the engine sounds better as well...