Direct injection: epic fail??

tbonesteak · 05-17-2009, 11:55 AM

Hey guys,

Seems like Nissan will be incorporating dfi into the Zs in a few years....but is it really that great of an idea? Yes it will make more power but lately ive seen so many engine failures from dfi equipped cars due to their nature of carbon deposits.

Another RS4 taken down by valve deposits - AudiWorld Forums

Ive seen a good number of porsches going down via some very nasty carbon deposits. That's why when everyone bashed the e9x m3 for not having direct injection, some people were very glad and look at it now. What do you guys think?

Nikon FM · 05-17-2009, 12:09 PM

I trust the Z engineers have learned from the competition. This may indeed be an epic win?

DIGItonium · 05-17-2009, 12:11 PM

Nissan has had experience with their NEO-DI engines, but I'm assuming it's because of the fuel quality in Japan versus what we have here.

Scribe · 05-17-2009, 01:06 PM

Direct injection makes fuel system upgrades far more difficult. If you plan on forced induction, you'll likely want to start with a non-direct inject engine.

05-17-2009, 11:55 AM	#1 (permalink)
tbonesteak Track Member Join Date: Mar 2009 Location: Socal Posts: 914 Drives: MY09 MB 6MT Rep Power: 375	Direct injection: epic fail?? Hey guys, Seems like Nissan will be incorporating dfi into the Zs in a few years....but is it really that great of an idea? Yes it will make more power but lately ive seen so many engine failures from dfi equipped cars due to their nature of carbon deposits. Another RS4 taken down by valve deposits - AudiWorld Forums Ive seen a good number of porsches going down via some very nasty carbon deposits. That's why when everyone bashed the e9x m3 for not having direct injection, some people were very glad and look at it now. What do you guys think?

05-17-2009, 12:09 PM	#2 (permalink)
Nikon FM Track Member Join Date: Jan 2009 Location: Snoqualmie WA Posts: 973 Drives: 03 996TT Porsche Rep Power: 606	I trust the Z engineers have learned from the competition. This may indeed be an epic win? __________________ Buddy Revell: "One man's sooner is another man's later"

05-17-2009, 12:11 PM	#3 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 42	Nissan has had experience with their NEO-DI engines, but I'm assuming it's because of the fuel quality in Japan versus what we have here. __________________

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05-17-2009, 01:06 PM	#4 (permalink)
Scribe Base Member Join Date: Jan 2009 Location: Houston, TX. Posts: 182 Drives: Touring-Sport-Manual Rep Power: 220	Direct injection makes fuel system upgrades far more difficult. If you plan on forced induction, you'll likely want to start with a non-direct inject engine.