W211 AMG Discuss the W211 AMG's such as the E55 and the E63

DYNO tomorrow: Questions!!!

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Old Oct 28, 2006 | 07:36 AM
  #1  
chem0's Avatar
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2004 E55 AMG
DYNO tomorrow: Questions!!!

Firstly, its a 2004 E55

now iv been doing my research and just want to clarify everything before going tomorrow.

Dyno Mode: thanks jakpro! http://media.putfile.com/Dyno-
just to make sure...

To turn on:
display on temperature
key in, turn to position 2, then off
turn to position 1, quickly press Reset button 3times
*new thing shows up*
steering wheel buttons scroll to "ESP Dynometer Test"
+/- buttons to "ON"
start car
*in dyno mode*
ESP not available bla bla bla on display

To turn off:
display on temperature
**then i got lost from the video how do i get back into the menu?**

after in the menu.. +/- to off and turn car off.. turn car on.


Ok now to the dyno part.
Manual mode, 4th gear, step on it and let off at 5500? 6000?
depending on what fan they have, how long should i wait between each run?


and yes i will take pics and vids
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Old Oct 28, 2006 | 08:30 AM
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2005 E55 AMG
No prob.

Here's the total procedure:

1. Turn ignition key to position 1 (SRS light on).

2. Make sure digital temperature gauge shows in instrument cluster. If it doesn't, use the arrow buttons on the left side of wheel to scroll through menu until it does.

3. Turn ignition switch off and back on again to position 1 (SRS light on).

4. Quickly, while the SRS light is on, push the trip odometer reset button at the far left of the instrument gauge cluster 3 times quickly.

5. Your display should now have a voltage reading, like "UB: 12.0V" on the screen.

6. Hit the up arrow button on the left side of the wheel until you get to the display that reads "ESP Dynamometer Test".

7. Now go to the right side of the steering wheel and hit the plus (+) button once to light up the "on" button for ESP Dynamometer Test.

8. Start up the car - you're now in dyno mode. The display will read "ESP unavailable Diagnostic Test". The car will stay in dyno mode, even if you turn off the engine.

9. To turn dyno mode off, turn ignition off, then turn ignition switch to position 1 again and hit the minus (-) button on the right side of the steering wheel once until the display says "ESP Dynamometer Test Circuit 15 off." Turn off the ignition - you're back to normal and out of dyno mode.

Suggest pulls in 4th gear - and hold it until it hits the limiter. Make sure you start the pulls low enough in the rpm range to get a good torque reading. I'd wait a good half hour between pulls, but that's me.

Hope that helps!

Last edited by Beowulf; Oct 28, 2006 at 08:37 AM.
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Old Oct 28, 2006 | 10:26 AM
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all this does is keep the car from upshifting on its own correct?
anything else?
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Old Oct 28, 2006 | 10:46 AM
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No - the car has to be in manual mode to keep from up-shifting. This procedure disables ESP so that you can get an accurate dyno reading. Note that it also disables ABS.
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Old Oct 28, 2006 | 12:03 PM
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Originally Posted by Beowulf
No - the car has to be in manual mode to keep from up-shifting.
even in manual mode, my car will upshift on it's own
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Old Oct 28, 2006 | 01:05 PM
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After you get the car into dyno mode, put the tranny into manual (M) mode. For the pulls, accelerate gently, shifting manually through the gears until you get to 4th. When you're rolling at about 30mph in 4th start the dyno recording and hammer it to the limiter (or your chosen rpm). The tranny should not upshift in M mode, especially with the car in dyno mode. When the pull is done, let off the gas and let the rear wheels coast to a stop - don't apply the brakes.
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Old Oct 28, 2006 | 01:22 PM
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Originally Posted by Beowulf
After you get the car into dyno mode, put the tranny into manual (M) mode. For the pulls, accelerate gently, shifting manually through the gears until you get to 4th. When you're rolling at about 30mph in 4th start the dyno recording and hammer it to the limiter (or your chosen rpm). The tranny should not upshift in M mode, especially with the car in dyno mode. When the pull is done, let off the gas and let the rear wheels coast to a stop - don't apply the brakes.
hammer it to the limiter..
or a recommended rpm would be....?

(sorry ask very directly, its 4.21am damn time difference)
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Old Oct 28, 2006 | 02:07 PM
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Assuming the car is stock, M-B rates the car with max hp @ 6100 RPM, redline is 6400. Your choice - I'd take it to redline, personally.
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Old Oct 28, 2006 | 02:19 PM
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Originally Posted by Beowulf
The tranny should not upshift in M mode, especially with the car in dyno mode.
but that is only when it is dyno mode correct?
what i'm asking is, is it normal for the car to upshift by itself while in manual mode?(not in dyno mode)
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Old Oct 28, 2006 | 02:36 PM
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From: Gwinnett County, GA
2005 E55 AMG
I've never had my tranny auto upshift while in manual mode, but I don't make a habit of running to redline in manual tranny mode (S mode 99% of the time on the street, although I use the shifter buttons frequently). M-B does claim that the Speedshift 5-speed tranny in manual mode "will automatically intervene only to induce an upshift at redline and select 1st gear when the vehicle stops". Mine ran to 6400+ on the dyno while in dyno mode/manual tranny mode and did not automatically upshift.

Last edited by Beowulf; Oct 28, 2006 at 02:39 PM.
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Old Oct 30, 2006 | 06:24 PM
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2004 E55 AMG
Whats the final drive ratio on our 55's?

2.65?
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Old Oct 30, 2006 | 06:30 PM
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I officially demand you practice getting it in once or twice in the garage tonight before you go.

Never fails, everyone is staring, people are gathering and you can't get it in dyno.

Don't let anyone at the dyno tell you different, do it in 4th and don't let them try to do a "1/4 mile run" or anything first. Near 100% of torque hits around 2500rpms so make sure they start the dyno at around 2000rpms or so.

You'll only have a few runs before heat soaking starts without cooling mods.

Good luck...take it to um man!!
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Old Oct 30, 2006 | 06:37 PM
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2.65 is correct - Waiting for a report back on your pulls! What Jakpro said - practice first. if necessary, print out the step-by-step instructions. Good luck!
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Old Oct 30, 2006 | 11:27 PM
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Didnt practise at all
got it first shot

the RPM readings from the dyno are weird
all the pulls were done in 3rd, rolling from 40km/h, up to around 6000rpm
we shut off around then because the curve started dropping.

283.9kW @ 8591rpm
431.4Nm @ 4256rpm

yup, rpm readings are way off but we're confident the power readings are accurate
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Old Oct 31, 2006 | 03:25 AM
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Originally Posted by chem0
Didnt practise at all
got it first shot

the RPM readings from the dyno are weird
all the pulls were done in 3rd, rolling from 40km/h, up to around 6000rpm
we shut off around then because the curve started dropping.

283.9kW @ 8591rpm
431.4Nm @ 4256rpm

yup, rpm readings are way off but we're confident the power readings are accurate

If the drive train losses are 17% (I think thats what people are saying here) then the numbers must be way off. If calculator/brain correct thats 340kW and 520Nm at Crank. Thats nowhere near the quoted figures.

Why 3rd gear?

Cheers.
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Old Oct 31, 2006 | 03:40 AM
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Think the speed limiter prevents you hitting max power rpm in 4th ...

Those numbers are meaningless to me ... 8500 rpm ?

Torque is way too low ... and does not compute to get the power output quoted.

You need to get your money back or ask for a re-run - 3rd gear is also no good.
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Old Oct 31, 2006 | 06:28 AM
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That's 380.56 RWHP & 318.18 RWTQ - something's definitely wrong. The pull should be done in 4th gear. What type of dyno? How were they attaching the RPM lead?
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Old Oct 31, 2006 | 07:40 AM
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yeh aparently alot of people had problems with the RPM readings as well.
no worries about the money back, it took out the highest RWD kW so.. i get a free dyno along with other freebies
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Old Oct 31, 2006 | 08:11 AM
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Originally Posted by 4npower
but that is only when it is dyno mode correct?
what i'm asking is, is it normal for the car to upshift by itself while in manual mode?(not in dyno mode)
At least for my 05 - No. It should bounce off the limiter.
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Old Oct 31, 2006 | 08:48 AM
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Originally Posted by enzom
It should bounce off the limiter.
well my 06' will shift up even in manual.
i thought i read somewhere that when you are racing someone, that is what you should do.....leave it in manual mode.
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Old Oct 31, 2006 | 06:27 PM
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Assuming you're talking about straight-line acceleration from a dig, put it in Sport (S) mode prior to launch and let the tranny shift by itself. If you've got a way to compare times you'll quickly see that S mode is both quicker and more consistent than manual mode. Note: you can use the shifter buttons on the wheel to shift manually when in S mode (e.g., hit the "-" to downshift to the optimum gear if you're running from a roll).

If you're on a road course or the twisties, M mode gives you the added control to apply power smoothly, without worrying about auto shifts messing up the car's balance in the middle of a corner.
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Old Oct 31, 2006 | 07:17 PM
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it will shift up even in manual and in sport or comfort mode. i've heard people say that it will bounce off the rev limiter and thats not the case. if you use the steering wheel buttons or the shifter to put the car in "1", you don't have to do anything else as far as shifting. when the car reaches redline it will automaticaly upshift. now if you don't quite make it to redline and let off the gas the car will stay at the rpm you let off the gass at until you upshift it.

thats what i was asking if "dyno" mode does....doesn't automaticaly upshift and then you will bounce off the rev limiter if you stay in it. (you really don't want the car to shift up a gear on the dyno)
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Old Oct 31, 2006 | 07:31 PM
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Interesting info. We dynoed a chipped 1998 E300d last weekend. Could not get the ASR completely shut down and showed only 160hp ASR light was flashing away the entire time.

Any procedure for disabling it on the earlier cars?

Thanks.
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Old Oct 31, 2006 | 07:39 PM
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Originally Posted by 4npower
it will shift up even in manual and in sport or comfort mode. i've heard people say that it will bounce off the rev limiter and thats not the case. if you use the steering wheel buttons or the shifter to put the car in "1", you don't have to do anything else as far as shifting. when the car reaches redline it will automaticaly upshift. now if you don't quite make it to redline and let off the gas the car will stay at the rpm you let off the gass at until you upshift it.

thats what i was asking if "dyno" mode does....doesn't automaticaly upshift and then you will bounce off the rev limiter if you stay in it. (you really don't want the car to shift up a gear on the dyno)
My car in 'M' mode will hit the limiter, whether it's in dyno mode or not. I have hit the limiter in 2nd and 3rd on the street experimenting. If you put it in s mode or comfort mode, you can select the gear you want by pressing the steering wheel buttons but it will always up-shift on its on. At least that's how it is on my car.
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Old Oct 31, 2006 | 11:24 PM
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I too have my first dyno on my E55 04 this coming Friday and was interested in your results.

Being new to all this, I have a question!

The Hp figures don't look all that bad to me...so is it just the Tq figures your all saying are too low. I can see that they seem very low compared to the official MB stats.

I am hoping for around the 380-400 RWHP...is this achievable on a stock 04 E55?

I live in Queensland Australia, so our high temps here might keep the figures down a bit.

Thanks for any input,
Scar
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