SL55/63/65/R230 AMG: Dyno'ed the SL55 today
Thread Starter
Former Vendor of MBWorld
Joined: May 2009
Posts: 2,305
Likes: 93
From: Valley of the Sun, Arizona
C63, SL55, E55, CLS55, ML63, C55
Dyno'ed the SL55 today
I got my SL55 Saturday morning... man, that was a great feeling.
My first impression was... "I though this thing would be faster" Other than that, Its a super nice car, I like it alot.
Today I hit the dyno.. I guess I was expecting more power
I made 385whp and 450wtq.. Thats 100whp and 130wtq less than my lighter C55... Maybe that why Im so jaded about these numbers.
Thats like a 30% or something driveline loss???? whats up with that?? IC pump is fine, everything looked to be in good working order.
Im going in for a software update from the dealer, Maybe that will help some. My brothers CLS55 made 420whp and 450wtq Stock. All he had was the latest MBZ software. We will see what happens
As of right not I got a whopping 385whp.
Lets let the modding begin
My first impression was... "I though this thing would be faster" Other than that, Its a super nice car, I like it alot.
Today I hit the dyno.. I guess I was expecting more power
I made 385whp and 450wtq.. Thats 100whp and 130wtq less than my lighter C55... Maybe that why Im so jaded about these numbers.
Thats like a 30% or something driveline loss???? whats up with that?? IC pump is fine, everything looked to be in good working order.
Im going in for a software update from the dealer, Maybe that will help some. My brothers CLS55 made 420whp and 450wtq Stock. All he had was the latest MBZ software. We will see what happens
As of right not I got a whopping 385whp.
Lets let the modding begin
MBWorld Fanatic!
Joined: Oct 2006
Posts: 4,856
Likes: 4
02 C32 AMG
I got my SL55 Saturday morning... man, that was a great feeling.
My first impression was... "I though this thing would be faster" Other than that, Its a super nice car, I like it alot.
Today I hit the dyno.. I guess I was expecting more power
I made 385whp and 450wtq.. Thats 100whp and 130wtq less than my lighter C55... Maybe that why Im so jaded about these numbers.
Thats like a 30% or something driveline loss???? whats up with that?? IC pump is fine, everything looked to be in good working order.
Im going in for a software update from the dealer, Maybe that will help some. My brothers CLS55 made 420whp and 450wtq Stock. All he had was the latest MBZ software. We will see what happens
As of right not I got a whopping 385whp.
Lets let the modding begin
My first impression was... "I though this thing would be faster" Other than that, Its a super nice car, I like it alot.
Today I hit the dyno.. I guess I was expecting more power
I made 385whp and 450wtq.. Thats 100whp and 130wtq less than my lighter C55... Maybe that why Im so jaded about these numbers.
Thats like a 30% or something driveline loss???? whats up with that?? IC pump is fine, everything looked to be in good working order.
Im going in for a software update from the dealer, Maybe that will help some. My brothers CLS55 made 420whp and 450wtq Stock. All he had was the latest MBZ software. We will see what happens
As of right not I got a whopping 385whp.
Lets let the modding begin
how dirty are the intake filters? you sure the i/c pump is fine? was it heat soaked while putting those numbers down...did you see it pulling timing anywhere while on the dyno? those do seem like low dyno numbers.
MBWorld Fanatic!
Joined: Jan 2007
Posts: 2,597
Likes: 19
From: Kuwait
CLS55 2006, CLS 63S 2015
filters, oil, fuel, build up of carbon if it has not been pushed for a very long time. cooling system not bled properly, plugs.
just a few things to check and cross off the list :P
gl and grats
just a few things to check and cross off the list :P
gl and grats
Super Member
Joined: Nov 2001
Posts: 801
Likes: 2
From: South Florida
SL65
Get a scanguageII so you can see your IAT Temps before your runs.
Make sure your Intake Temps are below 120 at the start of the run.
You didn't say if it was a dynojet or Mustang dyno....
Your brothers car is strong. You should see anywhere from 405-415 for a normal 55 engine.
Make sure your Intake Temps are below 120 at the start of the run.
You didn't say if it was a dynojet or Mustang dyno....
Your brothers car is strong. You should see anywhere from 405-415 for a normal 55 engine.
MBWorld Fanatic!
Joined: Oct 2006
Posts: 4,856
Likes: 4
02 C32 AMG
Get a scanguageII so you can see your IAT Temps before your runs.
Make sure your Intake Temps are below 120 at the start of the run.
You didn't say if it was a dynojet or Mustang dyno....
Your brothers car is strong. You should see anywhere from 405-415 for a normal 55 engine.
Make sure your Intake Temps are below 120 at the start of the run.
You didn't say if it was a dynojet or Mustang dyno....
Your brothers car is strong. You should see anywhere from 405-415 for a normal 55 engine.
MBWorld Fanatic!
Joined: Nov 2006
Posts: 9,137
Likes: 4
From: California, USA
E63 P30, CL500 Sport
Those numbers may not be so bad depending on the dyno you're using. On a dynojet, 99% of 55k dyno between 395 and 415 whp.... on a dyno dynamics (assuming no corrections being applied), I would expect the numbers to be less 
I don't know what's up with the CLS55, sounds like a super freak engine 
If it dynoed 420 whp on an already low-reading dyno dynamics, I would expect it to dyno at 450 to 460 whp on a regular dynojet 
Has he taken it to the track yet?
I don't know what's up with the CLS55, sounds like a super freak engine If it dynoed 420 whp on an already low-reading dyno dynamics, I would expect it to dyno at 450 to 460 whp on a regular dynojet Has he taken it to the track yet?
MBWorld Fanatic!
Joined: Feb 2004
Posts: 3,703
Likes: 5
From: Arizona
SL55AMG, Ferrari 348, Ferrari Testarossa, Ferrari F40, Ferrari Mondial t, Ducati 916, Indycar
I got my SL55 Saturday morning... man, that was a great feeling.
My first impression was... "I though this thing would be faster" Other than that, Its a super nice car, I like it alot.
Today I hit the dyno.. I guess I was expecting more power
I made 385whp and 450wtq.. Thats 100whp and 130wtq less than my lighter C55... Maybe that why Im so jaded about these numbers.
Thats like a 30% or something driveline loss???? whats up with that?? IC pump is fine, everything looked to be in good working order.
Im going in for a software update from the dealer, Maybe that will help some. My brothers CLS55 made 420whp and 450wtq Stock. All he had was the latest MBZ software. We will see what happens
As of right not I got a whopping 385whp.
Lets let the modding begin
My first impression was... "I though this thing would be faster" Other than that, Its a super nice car, I like it alot.
Today I hit the dyno.. I guess I was expecting more power
I made 385whp and 450wtq.. Thats 100whp and 130wtq less than my lighter C55... Maybe that why Im so jaded about these numbers.
Thats like a 30% or something driveline loss???? whats up with that?? IC pump is fine, everything looked to be in good working order.
Im going in for a software update from the dealer, Maybe that will help some. My brothers CLS55 made 420whp and 450wtq Stock. All he had was the latest MBZ software. We will see what happens
As of right not I got a whopping 385whp.
Lets let the modding begin
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Former Vendor of MBWorld
Joined: Jan 2007
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From: Glendale Arizona
C55,SL55,C63
Good News
After the first dyno run, It left me scratching my head.. Some times a light bulb goes off in my noggin. So I made sure to run this car down to just about empty. I filled up with some pump 91oct... and bingo! within about 15 min of driving yesterday the car felt better. I worked out of Dyno-Comp all day today. At the end of the day I tossed my car back on the dyno. I on the 3 pulls i did. that car made a consistent 412whp. Chalk one up for old/bad gas.
The dealer I bought the car from sent it to me with a full tank of gas. I should have known better. A 2005 with only 25k on it. Might have done some sitting around before I bought it. My guess is the dealer or someone topped the car of with some 87oct or something. Thus killing the power of this car.
All is now well in hooleyville power wise.
However, I had to track down a leak that was found by the rear drivers side tire. Turned out to be the ABC reservoir seal. It was tracking all the way back to the rear of the car.
The dealer I bought the car from sent it to me with a full tank of gas. I should have known better. A 2005 with only 25k on it. Might have done some sitting around before I bought it. My guess is the dealer or someone topped the car of with some 87oct or something. Thus killing the power of this car.
All is now well in hooleyville power wise.
However, I had to track down a leak that was found by the rear drivers side tire. Turned out to be the ABC reservoir seal. It was tracking all the way back to the rear of the car.
Member
Joined: Jun 2003
Posts: 231
Likes: 0
From: Phoenix
Hello-
Little off topic, but thought I'd try you here... We have your old C55 at our shop and are slowly peicing it together. Just wondering if you can give us a heads up on any info or parts you might have around. Namely looking for the ECU. Our customer would like to purchase the ECU if you've got it by chance or know where it might be. Subframe is on the way now along with oil pan and much of the front end. Would really appreciate if you can let us know any lines on the ECU. Thanks and enjoy the new SL!
Little off topic, but thought I'd try you here... We have your old C55 at our shop and are slowly peicing it together. Just wondering if you can give us a heads up on any info or parts you might have around. Namely looking for the ECU. Our customer would like to purchase the ECU if you've got it by chance or know where it might be. Subframe is on the way now along with oil pan and much of the front end. Would really appreciate if you can let us know any lines on the ECU. Thanks and enjoy the new SL!
MBWorld Fanatic!
Joined: Nov 2006
Posts: 9,137
Likes: 4
From: California, USA
E63 P30, CL500 Sport
After the first dyno run, It left me scratching my head.. Some times a light bulb goes off in my noggin. So I made sure to run this car down to just about empty. I filled up with some pump 91oct... and bingo! within about 15 min of driving yesterday the car felt better. I worked out of Dyno-Comp all day today. At the end of the day I tossed my car back on the dyno. I on the 3 pulls i did. that car made a consistent 412whp. Chalk one up for old/bad gas.
The dealer I bought the car from sent it to me with a full tank of gas. I should have known better. A 2005 with only 25k on it. Might have done some sitting around before I bought it. My guess is the dealer or someone topped the car of with some 87oct or something. Thus killing the power of this car.
All is now well in hooleyville power wise.
However, I had to track down a leak that was found by the rear drivers side tire. Turned out to be the ABC reservoir seal. It was tracking all the way back to the rear of the car.
The dealer I bought the car from sent it to me with a full tank of gas. I should have known better. A 2005 with only 25k on it. Might have done some sitting around before I bought it. My guess is the dealer or someone topped the car of with some 87oct or something. Thus killing the power of this car.
All is now well in hooleyville power wise.
However, I had to track down a leak that was found by the rear drivers side tire. Turned out to be the ABC reservoir seal. It was tracking all the way back to the rear of the car.
