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  1. #1
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    E550 Coupe/stock M278: quarter mile time best 12.428/115.13

    This is a clip from another site. Not too bad for a stock '12 E550 coupe (no limited slip)

    "I made it out to MIR's first test-and-tune yesterday and did a series of runs trying every combination of sport mode, dyno-mode, ESC on/off, etc. Best run of the day was 12.428 @ 115.13mph!

    The car ran a consistent 12.5XX all day, and only hit 12.6 and 13.1 (!!!) due to poor launches and a ridiculous amount of tire spin. My friend in the stands said I had billows of white smoke coming off the tires all the way to the 60' line during the 13.1 run!! I blame it on the hot girl that distracted me just as the second yellow lit up.

    Anyway, best results came from ESC off, Sport Mode on, transmission in manual mode but allowing the PCM to do panic shifts, and loading the TC with about 2300 rpm. Time slip below.

    All of this was with the All-Season Continentals, so I'm motivated to invest in a set of max-performance Summer tires and see how much difference they make"
    .
    Attached ThumbnailsClick here to enlarge

  2. #2
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    I should mention that Quaife has finally introduced a limited slip for the M278 E550 coupe/convertible.

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    That is an awesome time on street rubber. A tune with drag radials and this is an 11 second sleeper. Man, Mercedes is putting out some potent $#@!.

    The E550 comes with the 4.7 bi-turbo I believe?
    2012 CTS V - Sedan - 6AT

    Stage 1 Mods:
    - 2.5 upper pulley, Ported snout/throttle body, Fluidyne HX, Airaid CAI w/green filter, ID850 injectors

    Stage 2 Mods:
    - American Racing Headers w/X-pipe, 9.1 Lower Pulley, Tune Time Custom Cam, Moroso Dual Catch Cans, Zl1 Lid, Norcal Tank

    Stage 3 Mods:
    - LSA ported/polished heads, 4.5" G-Force intake, Nick Williams 102mm T-body, 8.6 Lower Pulley

    12.18 @ 118.98 - STOCK
    10.87 @ 127.02 - STAGE 1
    10.53 @ 131.31 - STAGE 2
    10.47 @ 133.20 - STAGE 3

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    Nice runs on your E550 CGI Coupe! Did you do try the run with roof on and off? Click here to enlarge

  5. #5
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    It's not my vehicle, although I own one. It belongs to a friend.
    Are you asking about opening the roof? Does that make it faster?
    Click here to enlarge

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    Click here to enlarge Originally Posted by Dueclaws Click here to enlarge
    It's not my vehicle, although I own one. It belongs to a friend.
    Are you asking about opening the roof? Does that make it faster?
    Click here to enlarge
    Did he try with roof closed and open to see the difference?

  7. #7
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    He didn't mention the roof; thus, I doubt it. I believe he might post later and answer the question.

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    Click here to enlarge Originally Posted by m54b25 Click here to enlarge
    Did he try with roof closed and open to see the difference?
    That was my car, and the roof was closed for all runs.

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    Click here to enlarge Originally Posted by nawlinstornado Click here to enlarge
    That was my car, and the roof was closed for all runs.
    Nice runs for a E550 CGI Convertible. Do you plan on getting it into the 11's?

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    Yep, it has the 4.6L bi-turbo M278 (as described by MB, but really 4.663L).

    I have driveline concerns with going to drag radials, so that is unlikely to get tested on my car. I'll probably do one more test & tune in stock config. Then I'm putting in the Quaife LSD (available late summer), RennTech Digital Suspension Lowering Module, and air filter upgrade - probably BMC. Once I get a few runs with that setup, it will be time for the RennTech tune.

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    Click here to enlarge Originally Posted by m54b25 Click here to enlarge
    Nice runs for a E550 CGI Convertible. Do you plan on getting it into the 11's?
    It's actually a Coupe, which I believe is both stiffer and lighter than the convertible. As for the 11's, that depends on how much compromise in comfort I have to make.

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    Click here to enlarge Originally Posted by nawlinstornado Click here to enlarge
    I have driveline concerns with going to drag radials, so that is unlikely to get tested on my car.
    I met with Kleemann USA yesterday since I was in the area. After discussing my driveline concerns, I'm now considering buying a set of rear wheels and drag radials. Any suggestions?

  13. #13
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    I don't have any advice regarding drag tires or wheels, but would like to see your results.
    When do you plan to get the Quaife? (I might need to delay purchase.)

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    Click here to enlarge Originally Posted by Dueclaws Click here to enlarge
    I don't have any advice regarding drag tires or wheels, but would like to see your results.
    When do you plan to get the Quaife? (I might need to delay purchase.)
    I'll get the Quaife as soon as it's available. Looks like July. I'm still debating if I'm going to do the swap myself, but also asking around for shops with a lot of experience. If Bird's comes back with a solution requiring no shimming/shaving, then I'll definitely do it myself. If not, then I'm going to be wrestling with the decision. I really like doing it on my own...

    I brought up the drag radials because I see so many people running them and their 60' times really improve a lot. But the more I think about it, the less interested I become. I love knowing that what my car puts down at the track is also what it puts down on the street. I ignore the fact that the starting pad at the drag strip is prepped.

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    That slip is too small. Who has the large one?

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    Click here to enlarge Originally Posted by nawlinstornado Click here to enlarge
    That was my car, and the roof was closed for all runs.
    Convertible running these times? Impressive.

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Convertible running these times? Impressive.
    Coupe, not convertible. It has the big pano-roof, but I kept it closed.

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    That slip is too small. Who has the large one?
    http://www.dragtimes.com/Mercedes-Be...lip-25275.html

  19. #19
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    Bone stock Mercedes-Benz C207 E550 Twin Turbo M278 Coupe runs a 12.4@115 1/4 mile at the MIR drag strip

    Very impressive results here from a completely stock E550 coupe. The M278 4.6 liter twin turbo V8 is looking more and more impressive powering this particular vehicle belonging to BenzBoost member nawlinstornado to a 12.428@115.13. That elapased time was achieved with the factory runflat Continental tires and no limited slip differential. The 1.961 60 foot can be improved tremendously with some real drag rubber meaning low 12's are realistically in this cars future stock.

    Now, this was done at MIR (Maryland International Raceway) which is a fast track especially when the density altitude drops. It was -621 feet at the time of this run which is definitely a contributing factor to the great results. Regardless, these cars dyno in the 390 wheel horsepower range stock making them very potent and underrated. Now just imagine if Mercedes and AMG make an E63 AMG coupe with the M157 V8.

    Congratulations to @nawlinstornado for the awesome results, timeslip below.

    Click here to enlarge

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    Click here to enlarge Originally Posted by nawlinstornado Click here to enlarge
    I have driveline concerns with going to drag radials
    I see no reason to have them with a rear wheel drive car and no LSD at this power level.

  21. #21
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    Click here to enlarge Originally Posted by nawlinstornado Click here to enlarge
    I brought up the drag radials because I see so many people running them and their 60' times really improve a lot. But the more I think about it, the less interested I become. I love knowing that what my car puts down at the track is also what it puts down on the street. I ignore the fact that the starting pad at the drag strip is prepped.
    11's stock would open some eyes.

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    I see no reason to have them with a rear wheel drive car and no LSD at this power level.
    After my conversation with Kleemann, I don't have any concern with the transmission or my soon-to-be-installed LSD. Looks like I'm more likely to break a half-shaft than anything. But in the end, I'd rather just run street tires. It's always fun to know that I didn't have to do anything special for track times.

  23. #23
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    Click here to enlarge Originally Posted by Dueclaws Click here to enlarge
    I should mention that Quaife has finally introduced a limited slip for the M278 E550 coupe/convertible.
    When was this released and where can I get the details?

  24. #24
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    11's stock would open some eyes.
    True, and based on Corey's (Kleemann) thoughts, I have no reason to believe I couldn't break into the 11.9s with an LSD and drag radials. I don't know, maybe.....

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    When was this released and where can I get the details?
    Apparently, Bird's UK caught onto my failed attempt to get some made by Quaife and bought a MB factory diff for them to match. See the thread here:
    http://mbworld.org/forums/e-class-co...rs-wanted.html

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