QQQ

+1

Mxcn

Breaking news folks, I just spoke to my homeboy who works for Mercedes NJ VPC. He told me they just unloaded '09 C350's and he confirmed 300 plus hp...how about that

Flame3g

oh man now we need push button start

rb23lb

BS, first posting Troll Boy

Will617

If you are right it would be welcomed news but if you are a 5 year old and just trying to get some attention

MCONDE01

I also was told by my salesperson that the 2009 C350 would have the 300hp engine...maybe it will be a mid year update. Also I wouldn't doubt that the C350 does get the new engine, they have been so hush hush about the 2009 model that it has to make you wonder a little. We are in mid july and still no decisive word. I just think they are going to wait to the very last moment until they announce the engine upgrade so they can attempt to get rid of the 2008's still on the lot. Imagine if the new engine did come out, the 2008 C350's on the lot would be discounted so heavily...that would be a hard deal to resist.

I will keep my fingers crossed.... 300hp

yxc145

was at the dealer yesterday. the sales person pulled up the specs on the 09 models they are getting. it's the same as the 08 268 HP.

451/443=EW

WOW, I cant believe that we are still on this.

No new engine in the 09. Stop listening to those goof ***** who dont know anything. HP will be unchanged.

451/443=EW

How about it? Why dont you go get one and show us then?
Dont forget to ask your homeboy if he sell bridge's too.

Will617

Well it seems after some discussion that the majority believes the C350's engine will remain the same.
I am leaning towards it myself but until I see some type of document on this forum or in person I will remain hopeful and optimistic.
I thank you all for your input

nyca

MB needs a direct injection engine in their volume cars (C, next E) because its the only way to meet the higher MPG standards - otherwise, every car they make will be subject to the gas guzzler tax. They will be there in the 2010s for sure.

TRauppius

Yes a direct injection gasoline engine CAN provide better fuel mileage, but I doubt this is how MB will utilize this technology.

The CGI engines provide improved specific fuel consumption, that is less fuel used in providing a given level of power for a given period of time. So, a CGI operating at the same HP level as a conventional engine will consume less fuel per unit of time. But MB instead has choosen to increase the peak HP, torque and, most significantly, the RPM at which the increased power is produced. Consequently at 300-305 HP CGI can and will often use more net fuel that the conventional 268 HP engine IF YOU TAP THAT POWER. The specific consumption advantage of CGI is not enough of an improvement to compensate for the higher power and operating RPM.

It will also idle smoother due to the more precise pulses of fuel and have a little less carbonization over time. A downside is the uncertain reliability of the high pressure piezo-injectors and the need to use a fuel cooler/interchange gizmo that taps either the water or, better yet, the AC coolant to drop the temperature of the pressurized fuel.

All of that aside, more power on tap is probably a big plus for many potential buyers.....and it will be cutting edge technology.

nyca

Look at the MB lineup - no fuel efficient cars. That cannot continue.

The 2010 Cs will show a 15% improvement in fuel efficiency, and produce more power also. Look at the new 911 (it gets better mileage then a C300) as an example of a DFI application to cover both bases.

I agree with you on the complex technology for DFI - Audi is way ahead, the first MB DFI engines will be "interesting" from a reliability standpoint.

TRauppius

They key word you used is "efficiency" and, as you can see from my earlier post, the CGI engine certainly qualifies as having a better specific fuel consumption. But the EPA stickers on the cars equipped with the CGI 350 are actually coming in the same or 1 MPG lower than prior generation cars because they have higher HP, and develop it at higher RPM. The noted 15% less fuel for the same HP is a significant improvement but I suspect the actual mileage in the hands of owners will be lower due to using the extra power, rather than just feather pedaling the gas to stretch out that 15% efficiency boost.

I am familiar with the Audi system, but the MB system runs at higher pressures (needs more fuel cooling) and combines microsecond duration injection pulses (14-19 short per pulses per cylinder per intake stroke), variable pulse width, and variable pulse timing. It is an engineering tour de force. I sure hope they got a chance to fully develop this before they spring it on the public. However, I am hopeful for MB as they have used very similar injectors and control loops in their exotic diesel systems. If they offered it on the 2009 C350 I would probably be game to try it out.

e1000

The MB 3.5L CGI engine is tuned for both power and efficiency. It generates approximately +20 hp over the conventional 3.5L V6 but improves fuel efficiency by 15%.

http://www.emercedesbenz.com/Feb06/2...sCLS30CGI.html

This engine is different than what will be offered in the 2009 SLK350. It does not take advantage of CGI technology, but will produce 300hp.

TRauppius

Yes, I am aware of the URL link you have referenced. But again fuel "efficiency" is not the same as fuel usage IF the extra power is tapped/utilized. At best it could be thought of as extra power with very little increase in real world mileage and, at worst, an a couple MPG lower if you drive with a heavy foot on the gas.

It is a known via published road tests and MB literature/websites that 2009 SLK350 is non CGI and has been tweaked to higher HP primarily through sustaining useful torques level up to an extended (higher) RPM level.

In any event it does not appear that there will be any 2009 C Class power boost, CGI or otherwise.

Germancar1

The 2009 models are up on MBUSA now, same engine as 08 with 268hp.

BTW, the whole site has been revamped it looks really good now!!!

M