gavriil

Really? I have not heard of a consistent complaint about the above from all DI engines. I know however, that VW, one of the first with DI engines, has the tendency to tune their 4 cylinder engines to sound like diesel engines at idle and this might possibly be what you have heard or read about.

gavriil

There is a peculiar case with Lexus where we have an engine that works on both DI and FI modes. Do I remember correctly?

AlterZgo

Here's a recent thread about the ticking noise on Club Lexus:

http://www.clublexus.com/forums/showthread.php?t=195420

I recall reading threads about similar issues w/ Audi engines having DI as well.

gavriil

^ Hm. Intereseting.

biker

Sure ES350 and IS350 have the same basic engine one with and one without DI, but it's on different cars. I don't think the IS will ever go back or offer an engine without DI, nor with the GS from now on (06 GS430 still FI). Audi will probably stay with DI from now on. Once they switch a model to DI it wouldn't be good marketing to offer FI later on. Hence, I think it will be long time before the volume model G35 or even the G37 will get it.

Even BMW and MB are slow to adopt DI - there's no pressure to do so - the benefits are not very marketable to avg Joe buyer. G35 gets above 300HP via some trickery (dual intake, low friction internals) and high revs, the IS350 via DI and the BMW335 via Turbo. Of those I'm sure Nissan's way is the cheapest (although probably the worst for mileage) - that's what matters to them.

biker

The one thing DI makers may gain an advantage in is development knowledge in high pressure fuel systems - something also used in diesels. This will come in handy down the road when the internal combustion engine may become a hybrid - can run in either diesel or 4 cycle mode depending on what's in the tank - something Honda is already working on with the 2.2iCTDi diesel engine.

Infamous425

335 also has DI but loses "vtec"

derrick

More 2008 coupe rumours: Word is from the Canadian national debriefing for sales reps on the new G sedan ...

The 2nd gen G coupe will be slated for release in August 2007. This is contrary to a published statement by Nissan Canada President, Mark Grimm, printed in several Canadian newspapers earlier this month.

Very disappointing news to persons looking to buy a car in the spring of 2007 (ie me).

biker

The details of the coupe should be known by the Jan Detroit car show. Maybe the arrival of the 335 caught Nissan by surprise and they'll dump the G35 and go straight to the G37 which will take more time.

derrick

^ I'm definitely going to the Detroit Autoshow (I live across the border from Detroit, MI). Of course, the news of the 2nd gen coupe release will be discussed during the media days ... so we'll know (by reading this forum / thread) well before I step foot inside Cobo Hall.

Now ... will I have my DSLR in time for the 'show ... (I hope my GF is reading this ... hint, hint)

Again ... what I said above is pure rumour. No one knows when the new coupe will be released. All this secrecy nonsense. But biker's explanation to the delay does make sense.

charliemike

It could be but the 335i will cost about $10-15k more than the G35 does ... I think 315hp (if it gets the G35 sedan engine) will be okay for now.

biker

Depends on how far Nissan wants to reach but G prices are certainly keeping up with BMW increases (people are talking about 40K 07 G35 sedans!). Also, the sedan makes 306 (where did 315 come from?) which is equal to the IS350 and only on paper higher than the 335 (which in reality is probably higher - dyno tests suggest 330+). Nissan wants to be ahead of these rivals - skipping to the G37 might make sense depending on the urgency they feel to do so and the time it would take to move the G37 forward.

gavriil

Agreed.

I believe one of the biggest benefits of DI that many overlook is how it has helped turbocharging become, both, more economical (with respect to gas consumption) and minimize lag to the point of it not being a major issue of turbocharging in general. One could say that DI has saved turbocharging and has now made it clearly more advantageous than supercharging.

gavriil

^ Related to the above, I was just reading about the IROC concept by VW. That thing uses a specially tuned version of its 1.4 Liter Twincharger (TSI) family of engines making 208HP! And gets 30mpg or better.

gavriil

That would be disappointing indeed.

gavriil

I was guessing that they'd need more power to compete. The 335 basically makes 340HP at the crank. If Infiniti were planning in releasing the 306HP engine from the sedan in the coupe, they'd be certainly underpowered and that's not very Infiniti-like.

oem tsx

http://www.e90post.com/forums/attach...2&d=1160771289

seems like owners are reporting 260ish whp for the new 335i not 300whp like the auto mag tests

http://www.e90post.com/forums/showthread.php?t=33272

F23A4

I for certain but, I think it was Motor Trend which spec'd '315hp' on the 07 350Z version of the VQ35HR.

titan

Lets hope it's just a rumor.

Infamous425

thats no surprise. avg price of cars these days has risen quite a bit. when the 1st gen g35 came out im sure it was 10k less than a similar equipped 3 series and that still holds true today.

biker

But the 07 G35 sedan is listed at 306.

biker

The problem might be that at those kinds of boost levels long term reliability might become an issue. The GT-R will get much of its HP advantage over the G35 via boost and perhaps even DI, so we'll have to wait and see on how Nissan approaches the need for more HP.

oem tsx

didnt the old m3 put down around 260whp too? does that mean the old m3 under the current ratings should be more at 300hp at the crank?

biker

Current/old M3 has 333HP at the crank. The 335 has a tq advantage which makes it real close in performance with the M3. Other than the M badge and few niceties there's little reason to buy an 07 M3 over an 07 335 coupe.

F23A4

True but, I think that (07 350Z) may have been where Charliemike got that 315hp figure from. Again, . But for now, it appears to 306hp in the G.

Infamous425

did they mention anywhere if the sport model has a different suspension than the regular g35?

biker

The only thing mentioned are the larger brakes, tires and availability of rear wheel steering. I would assume there might be some subtle changes but nothing detailed that I've read. All should be known in a week.

Biker, who can't believe the prices have not leaked out.

Infamous425

pricing is here http://photos.freshalloy.com/gallery...r/PG1.JPG.html

Mokos23

I'm still hoping that you can just buy an 07 G35 and add a navigation package as the only option w/o having to get a premium package too. But, I have a feeling that won't happen.

dom

Quick synopsis. A G35 Sport MT with Navi, perf wheel and tire pack and Premium pack @ $36,900 is still less than a TL-S? Uh-Oh.

derrick

^ Clearly states on the attachment that Navi package requires P01 (ie premium package.)

Overall ... not surprised at the modest price hike.

Mokos23

My synopsis: value-wise, looks, and performance-wise, 2007 G35 > 2007 TL-S

AsianRage

Great, comparing a new generation model with a refreshed one. How about you wait a couple year from now when the 4g TL come out then make a fair one? But as it stands, I don't like the look of the new G nor the interior, so TL-S > G35.

Mokos23

But, you need to stay in the present because there is no 4g TL yet, so in terms of now Oct. 2006 until Dec. 2007, the G35 has a better interior and exterior than the TL-S and you're just defending your TL, because it's painfully true fact.

Also, you've got to be blind or you just have bias because the red gauges in the TL-S are ugly to me vs. the white/blue gauges in the 07 G35.

dom

Subjective, Subjective, Subjective. How can you say any of that is fact? Although I agree with you, still doesn't make it fact.

Mokos23

Alright, it's time for my Lexus overpriced statement.

I would still get either the TL-S or 07 G35 before I buy an overpriced ES350 or IS350

FiveLiterCheater

Argh, when are they going to release details about the coupe?

Infamous425

probably not for another couple months since supposedly they pushed back the release until summer

Infamous425

i actually liked the TL-S guages alot. in person they look very cool. they're not all red like mazda/bmw, the lettering is white the needles and circle outline are red

cob3683

Wow....$40,250 for the one I would want.

Sorry Infiniti, for $6,850 more I will take the 335i sedan all day long.