Big Yay for Surrey Rolling Road - check my dyno results
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From: Croydon, England
2004 E55 AMG
Big Yay for Surrey Rolling Road - check my dyno results
Finally had a successful dyno run on the E55 at Surrey Rolling Road - cheers Charlie 
At the crank...
and at the wheels...
Have had the car on two other rolling roads with unsuccessful top end readings, as it was spinning the rear wheels in 4th at 2900 rpm
I'm a happy boy now
At the crank...
and at the wheels...
Have had the car on two other rolling roads with unsuccessful top end readings, as it was spinning the rear wheels in 4th at 2900 rpm
I'm a happy boy now
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From: Chicago, IL
Real Cars
481rwhp on dyno dynamics is staggering! You have a monster my friend. I do not know if those crank numbers are accurate though.
In my experience on dyno dynamics:
Stock 55k = 380-400rwhp
Pulley/HE/ECU = 420-435rwhp
Pulley/HE/ECU/TB/Headers = 460-470rwhp
Now the adjustments/corrections your operator is using may be different, since that is a pretty high number for your mods... but then again you just might have a STRONG car. Congrats in any event.
-m
In my experience on dyno dynamics:
Stock 55k = 380-400rwhp
Pulley/HE/ECU = 420-435rwhp
Pulley/HE/ECU/TB/Headers = 460-470rwhp
Now the adjustments/corrections your operator is using may be different, since that is a pretty high number for your mods... but then again you just might have a STRONG car. Congrats in any event.
-m
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From: Orlando, FL
04 E55 AMG, 03 350z Track Built/Single Turbo
Nice ride, I'm sure that thing rolls out!
Last edited by taurran; Jun 9, 2009 at 01:00 PM.
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V12-Biturbo
As I've said before Dyno Dynamics, can be set to read higher than DynoJets, I've seen hundereds of Dynos in my day from both patforms. I guess we have a glut of factory freaks running on this board w/this being the 3rd or 4th Dyno Dynamics E55 stage 2 w/480+ rwhp LOL... At least Dynojets are consistant, I swear I see Dyno Dynamics readings all over the grid like Marcus. When set properly they do indeed read much lower than Dynojets. Though it appears the majority of Dyno Dynamics have now been set to read abnormally higher.
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From: Orlando, FL
04 E55 AMG, 03 350z Track Built/Single Turbo
As I've said before Dyno Dynamics, can be set to read higher than DynoJets, I've seen hundereds of Dynos in my day from both patforms. I guess we have a glut of factory freaks running on this board w/this being the 3rd or 4th Dyno Dynamics E55 stage 2 w/480+ rwhp LOL... At least Dynojets are consistant, I swear I see Dyno Dynamics readings all over the grid like Marcus. When set properly they do indeed read much lower than Dynojets. Though it appears the majority of Dyno Dynamics have now been set to read abnormally higher.
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Real Cars
As I've said before Dyno Dynamics, can be set to read higher than DynoJets, I've seen hundereds of Dynos in my day from both patforms. I guess we have a glut of factory freaks running on this board w/this being the 3rd or 4th Dyno Dynamics E55 stage 2 w/480+ rwhp LOL... At least Dynojets are consistant, I swear I see Dyno Dynamics readings all over the grid like Marcus. When set properly they do indeed read much lower than Dynojets. Though it appears the majority of Dyno Dynamics have now been set to read abnormally higher.
-m
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From: Orlando, FL
04 E55 AMG, 03 350z Track Built/Single Turbo
I've seen EVERY dyno company have numbers all over the place. My shop does not use ShootOut mode on their DD so I am not familiar with how it affects numbers. Dyno numbers for the most part are kind of stupid to be quite honest... goto a track and tell us what you are trapping...
-m
-m
The only real comparison between two cars is a heads up run or a dyno on the same dyno, on the same day.
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From: Orlando, FL
04 E55 AMG, 03 350z Track Built/Single Turbo
Dyno Dynamics are load based and much better tuning tools. You can apply load or simulate driving conditions to get the tune perfect throughout the power band.
Dynojets are better for standard comparisons and posting up numbers, as they're the current US industry standard. But, being simple inertia dynos, aren't quite as sophisticated when it comes to dyno tuning.
Dynojets are better for standard comparisons and posting up numbers, as they're the current US industry standard. But, being simple inertia dynos, aren't quite as sophisticated when it comes to dyno tuning.
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Traction/etc will affect numbers downward, but not upward. You cannot spin, or launch poorly and get an excessively high trap speed. On a dyno you can inflate numbers, but you cannot significantly inflate a car's trap speed. It will vary a few MPH, but the best it does is the best it does. You cannot make a 115mph car trap 120mph, unless when he trapped 115mph he was spinning half way down the track or backed off the throttle.
Of course, with trap speed, there is DA, which again will only affect numbers down.
-m
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From: Orlando, FL
04 E55 AMG, 03 350z Track Built/Single Turbo
There is no perfect way to show HP, not even two cars on the dyno on the same day. Trap speed is better than dyno because unlike the dyno, it reflects things like weight, gearing, etc. A lotus elise trapping 117mph and an E55 trapping 117mph from a roll will be almost even, even though they would make VERY different hp figures on a dyno.
Traction/etc will affect numbers downward, but not upward. You cannot spin, or launch poorly and get an excessively high trap speed. On a dyno you can inflate numbers, but you cannot significantly inflate a car's trap speed. It will vary a few MPH, but the best it does is the best it does. You cannot make a 115mph car trap 120mph, unless when he trapped 115mph he was spinning half way down the track or backed off the throttle.
Of course, with trap speed, there is DA, which again will only affect numbers down.
-m
Traction/etc will affect numbers downward, but not upward. You cannot spin, or launch poorly and get an excessively high trap speed. On a dyno you can inflate numbers, but you cannot significantly inflate a car's trap speed. It will vary a few MPH, but the best it does is the best it does. You cannot make a 115mph car trap 120mph, unless when he trapped 115mph he was spinning half way down the track or backed off the throttle.
Of course, with trap speed, there is DA, which again will only affect numbers down.
-m
We're talking a measure of straight horsepower here - not weight, conditions, traction, or driving ability. The same dyno on the same day isn't entirely perfect, but it's the best comparison you can hope to get.
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Joined: Mar 2008
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From: Croydon, England
2004 E55 AMG
https://mbworld.org/forums/w211-amg/...-hd-video.html
Thanks for all the comments - and I'm happy with my numbers
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From: Chicago, IL
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Actually, rolling off the line at a more relaxed pace without spinning will net you a better trap speed in my experience. If you stick a nice launch and cut a good 60ft and ET, your trap will actually be lower.
We're talking a measure of straight horsepower here - not weight, conditions, traction, or driving ability. The same dyno on the same day isn't entirely perfect, but it's the best comparison you can hope to get.
We're talking a measure of straight horsepower here - not weight, conditions, traction, or driving ability. The same dyno on the same day isn't entirely perfect, but it's the best comparison you can hope to get.
A better 60 ft will always net a lower trap speed. Rolling off the line gently will net a higher trap speed. I am very well aware of that and acknowledged it in my first post. However you are talking about a few MPH at our levels. You aren't talking 10mph, or 15mph. You might trap 116 with a good launch, and 118 with a crappy one. Regardless of the variance, unlike a dyno which will just measure HP - trap speed will tell you how you stack up against a totally different car... like a stripped out modified Elise who makes crap HP on the dyno but because he weighs 2800lbs actually can put out a decent trap.
Above all, dyno's still often don't translate into real world results. I have seen cars that dyno high and get to the track only to run mediocre trap speeds/times. I have NEVER seen a car that traps well put down crappy numbers (assuming his car is running the same way it did when it trapped well).
-m
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From: Orlando, FL
04 E55 AMG, 03 350z Track Built/Single Turbo
taurran,
A better 60 ft will always net a lower trap speed. Rolling off the line gently will net a higher trap speed. I am very well aware of that and acknowledged it in my first post. However you are talking about a few MPH at our levels. You aren't talking 10mph, or 15mph. You might trap 116 with a good launch, and 118 with a crappy one. Regardless of the variance, unlike a dyno which will just measure HP - trap speed will tell you how you stack up against a totally different car... like a stripped out modified Elise who makes crap HP on the dyno but because he weighs 2800lbs actually can put out a decent trap.
Above all, dyno's still often don't translate into real world results. I have seen cars that dyno high and get to the track only to run mediocre trap speeds/times. I have NEVER seen a car that traps well put down crappy numbers (assuming his car is running the same way it did when it trapped well).
-m
A better 60 ft will always net a lower trap speed. Rolling off the line gently will net a higher trap speed. I am very well aware of that and acknowledged it in my first post. However you are talking about a few MPH at our levels. You aren't talking 10mph, or 15mph. You might trap 116 with a good launch, and 118 with a crappy one. Regardless of the variance, unlike a dyno which will just measure HP - trap speed will tell you how you stack up against a totally different car... like a stripped out modified Elise who makes crap HP on the dyno but because he weighs 2800lbs actually can put out a decent trap.
Above all, dyno's still often don't translate into real world results. I have seen cars that dyno high and get to the track only to run mediocre trap speeds/times. I have NEVER seen a car that traps well put down crappy numbers (assuming his car is running the same way it did when it trapped well).
-m
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Joined: May 2008
Posts: 3,077
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2006 E55 AMG
taurran,
Above all, dyno's still often don't translate into real world results. I have seen cars that dyno high and get to the track only to run mediocre trap speeds/times. I have NEVER seen a car that traps well put down crappy numbers (assuming his car is running the same way it did when it trapped well).
-m
Above all, dyno's still often don't translate into real world results. I have seen cars that dyno high and get to the track only to run mediocre trap speeds/times. I have NEVER seen a car that traps well put down crappy numbers (assuming his car is running the same way it did when it trapped well).
-m
. Afer these results I knew it was time for the track. After taking my car to the track a couple of times I trapped 123.7 with a 11.56. Not sure what that calculates out to in rwhp but I was definitely happy. As Marcus said, the track will let you know if your making power or not.
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From: Southern, CA.
V12-Biturbo
Did this lat summer...
https://mbworld.org/forums/w211-amg/...-hd-video.html
Thanks for all the comments - and I'm happy with my numbers
https://mbworld.org/forums/w211-amg/...-hd-video.html
Thanks for all the comments - and I'm happy with my numbers
60ft - 2.0041
330ft - 5.2687
1/8 ET - 7.9565
1/8 MPH 91.59
1000' ET 10.2068
1/4 ET - 12.2158
1/4 MPH - 116.25
330ft - 5.2687
1/8 ET - 7.9565
1/8 MPH 91.59
1000' ET 10.2068
1/4 ET - 12.2158
1/4 MPH - 116.25
With true 480+rwhp on Dynodynamics you should be trapping 122-124mph not 116mph
Last edited by Thericker; Jun 16, 2009 at 03:02 AM.
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From: Orlando, FL
04 E55 AMG, 03 350z Track Built/Single Turbo
I ran my car on several dynojets when I first had my VR600 installed and they all read a little low, 470 ish - 480. I even had a dynojet tell me I was making 460 rwhp.... Afer these results I knew it was time for the track. After taking my car to the track a couple of times I trapped 123.7 with a 11.56. Not sure what that calculates out to in rwhp but I was definitely happy. As Marcus said, the track will let you know if your making power or not.
. Afer these results I knew it was time for the track. After taking my car to the track a couple of times I trapped 123.7 with a 11.56. Not sure what that calculates out to in rwhp but I was definitely happy. As Marcus said, the track will let you know if your making power or not.Dyno = engine power and environment
Track = all of the components of the car, environment, and driver rolled into one.
Just sayin'...
