paultyler_82

iTrader: (1)

Has anyone done any research into the VQ30DD engine and can the DE's injection system be replaced with the NeoDi injection system from the DD, just a thought...

IceY2K1

iTrader: (3)

Not without an ABSURD amount of money/parts and the gains wouldn't be that great.

JClaw

iTrader: (17)

If would be cool if Nissan had done a VQ35DD.

SR20DEN

iTrader: (7)

Don't some VQ35DDs exist in Japan?

SR20DEN

iTrader: (7)

No. It's far more complicated than just changing the injection system. It would also require the DD cylinder heads.

paultyler_82

iTrader: (1)

But it would require a head and injection system swap, right, what else, ECU?

Ninos_Maxima

iTrader: (5)

yeah i have researched it, it wont work in america, because of sulfur issues in the gas we have

Nealoc187

iTrader: (23)

Don't they use much higher octane gas for the DD cars. For some reason the number 98 sticks in my head.

Ninos_Maxima

iTrader: (5)

iono but that would explain why they had a 98 octane gas

96sleeper

iTrader: (4)

Actually our gas can support it. They used to say we had too much sulfur, but I think the technology has advanced. The new audi engine ( A4) is the first direct injection gas engine in the US. 12.5 to 1 compression on pump gas.

I think the VQ30DD did make 280hp, versus our 222hp. By the time all money was spent on this, a turbo would be a better investment for the money.

http://www.edmunds.com/insideline/do...ticleId=103036

IceY2K1

iTrader: (3)

They run MUCH much higher compression due to the atomization and inter-cylinder cooling direct injection provides while on decent pump gas.

Lexus's new IS with the 4GR-FSE is a 2.5L direct injection V6, which will be released in the USA.

JeffesonM

iTrader: (5)

donate $20 and you can find this info yourself:

http://forums.maxima.org/showthread.php?t=311554

http://forums.maxima.org/showthread.php?t=360719

http://www.cmvttc.gov.tw/page_a44.htm (Babelfish translation)