C63/C63S AMG
Sponsored by:
Sponsored by:

Stage2 Dyno, low number?

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Sep 10, 2019 | 06:33 PM
  #1  
hhcheng23's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2017
Posts: 56
Likes: 5
C43
Stage2 Dyno, low number?

My C63S has stage2 tune and cat-less.
Recently I felt my car was not pulling as hard at high end speed, so look my car to a dyno run yesterday to see if any clues and got below result.
The max HP is only 440HP and the power delivery seems decline too early and too quickly.
Days ago, I also did quarter mile and got me 12.3 sec and 60-130 miles as 10.4 sec. Pretty slow..
It does not seem to right to me. Anyone know what may cause this or is this normal for this car?
I will bring my car in for 20K mile service very soon, and can ask dealer to take a look if any place needs their attention?


Reply
Old Sep 10, 2019 | 07:09 PM
  #2  
Cascade1's Avatar
Member
 
Joined: Nov 2018
Posts: 76
Likes: 8
2019 C63WS
What tune?
Reply
Old Sep 11, 2019 | 03:14 AM
  #3  
skim7x's Avatar
MBWorld Fanatic!
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2017
Posts: 1,117
Likes: 182
Mercedes-Benz E63s AMG
Yeah definitely very slow... Even a C43 would be faster haha. You should be at least in the mid 11's with stage 2 tune, I believe...at least that's where I'm at...
Reply
Old Sep 11, 2019 | 10:43 AM
  #4  
raudiace4's Avatar
MBWorld Fanatic!
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2014
Posts: 1,589
Likes: 683
From: IL
19 E63s, 23 M3 compX, B9 SQ5
Who is your tuner? I think I know who it is. LOL.

What was your trap speed in 1/4?

Check what your spark plugs look like, but It's most likely the tune.
Reply
Old Sep 11, 2019 | 11:17 AM
  #5  
ciphoric's Avatar
Junior Member
 
Joined: Jun 2019
Posts: 29
Likes: 1
C63S Edition 1
My car was dropping off in power just like this and found out that it had some soft codes and the car was in limp mode. It was due to my exhaust valve wires being unplugged. Yours could be something else though, would be worth getting it scanned to see what it is. My codes didn't throw a CEL.
Reply
Old Sep 11, 2019 | 11:44 AM
  #6  
AlexZTuned's Avatar
MBWorld Fanatic!
 
Joined: Dec 2012
Posts: 1,537
Likes: 372
From: Austin, TX
2017 Porsche 911 C4
This does look indicative of limp mode, although it's unusual to see such a high torque spike like that if you're in limp mode. I do 60-130 MPH in 9 seconds flat with just the Dinan tuner and no other mods - in Texas heat too.

You need to scan for codes and see if anything is out of whack - I'd contact your tuner, not the dealership.
Reply
Old Sep 11, 2019 | 12:51 PM
  #7  
hhcheng23's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2017
Posts: 56
Likes: 5
C43
Originally Posted by raudiace4
Who is your tuner? I think I know who it is. LOL.

What was your trap speed in 1/4?

Check what your spark plugs look like, but It's most likely the tune.
Trap Speed 118~119 mph... Also super low considering its stage 2 car.
Reply
Old Sep 11, 2019 | 12:53 PM
  #8  
hhcheng23's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2017
Posts: 56
Likes: 5
C43
Originally Posted by ciphoric
My car was dropping off in power just like this and found out that it had some soft codes and the car was in limp mode. It was due to my exhaust valve wires being unplugged. Yours could be something else though, would be worth getting it scanned to see what it is. My codes didn't throw a CEL.
I had the ASR module but now removed. I did double check again the connector and it is just fine.
What scanner can detect the soft code?
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

 Verdad Gallardo
story-1

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-2

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-3

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-4

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-5

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-6

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-7

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-8

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-9

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
Old Sep 11, 2019 | 02:44 PM
  #9  
BMS's Avatar
BMS
Former Vendor of MBWorld
 
Joined: Dec 2005
Posts: 827
Likes: 152
From: Simi Valley, California
2018 C63 Sedan
Main thing is to do a datalog and evaluate boost, timing, and AFR, to see if any of those point to the loss of power.
Reply
Old Sep 11, 2019 | 02:53 PM
  #10  
Cascade1's Avatar
Member
 
Joined: Nov 2018
Posts: 76
Likes: 8
2019 C63WS
But what tune? Why is it a secret
Reply
Old Sep 11, 2019 | 03:46 PM
  #11  
raudiace4's Avatar
MBWorld Fanatic!
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2014
Posts: 1,589
Likes: 683
From: IL
19 E63s, 23 M3 compX, B9 SQ5
Yeah i'd scan for codes, take it to any auto parts store to scan for free. Most likely it's a tune issue. Do you have hessitation at WOT mid range?

The numbers your car posted are what I expect for a bone stock car..
Reply
Old Sep 11, 2019 | 05:10 PM
  #12  
JPM-3's Avatar
Member
 
Joined: Mar 2019
Posts: 82
Likes: 20
From: North NJ
2010 BMW M3, 2010 Lancer Evolution X, Incoming 2020 C63S Coupe
Originally Posted by AlexZTuned
This does look indicative of limp mode, although it's unusual to see such a high torque spike like that if you're in limp mode. I do 60-130 MPH in 9 seconds flat with just the Dinan tuner and no other mods - in Texas heat too.

You need to scan for codes and see if anything is out of whack - I'd contact your tuner, not the dealership.
Nice time for tune only. What did you run stock for 60-130?
Reply
Old Sep 11, 2019 | 07:42 PM
  #13  
CarHol's Avatar
Junior Member
 
Joined: Oct 2015
Posts: 42
Likes: 1
MB
your year car?
Reply
Old Sep 11, 2019 | 07:46 PM
  #14  
hhcheng23's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2017
Posts: 56
Likes: 5
C43
Originally Posted by CarHol
your year car?
2018 C63S Coupe
Reply
Old Sep 11, 2019 | 07:48 PM
  #15  
hhcheng23's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2017
Posts: 56
Likes: 5
C43
Originally Posted by BMS
Main thing is to do a datalog and evaluate boost, timing, and AFR, to see if any of those point to the loss of power.
How/where do I get the data-log? What device is required? Do you think dealer can do it for me?
Reply
Old Sep 11, 2019 | 07:53 PM
  #16  
CarHol's Avatar
Junior Member
 
Joined: Oct 2015
Posts: 42
Likes: 1
MB
Originally Posted by hhcheng23
How/where do I get the data-log? What device is required? Do you think dealer can do it for me?
you can get obd logger on amazon and buy torque for android to log. both cost about 25$.
Reply
Old Sep 11, 2019 | 11:11 PM
  #17  
ezatnova's Avatar
Super Member
 
Joined: Dec 2011
Posts: 557
Likes: 71
2016 C63S
What tune?
Reply
Old Sep 12, 2019 | 06:47 AM
  #18  
DaRuzzian's Avatar
Member
 
Joined: Jul 2018
Posts: 78
Likes: 17
2016 c63s
I just ran 11.8s @118.5mph last week stock. In very hot FL weather.

Getting some slips to compare as I'm about to be stage 2.


Have the dealer check your solenoids, see if one is melted into the intercooler tubing.
Reply
Old Sep 12, 2019 | 09:43 AM
  #19  
AlexZTuned's Avatar
MBWorld Fanatic!
 
Joined: Dec 2012
Posts: 1,537
Likes: 372
From: Austin, TX
2017 Porsche 911 C4
Originally Posted by JPM-3
Nice time for tune only. What did you run stock for 60-130?
Stock is around 10.2 seconds - different day and weather conditions so not an exact before/after.

The tune alone picked up about 5 MPH in 1/4 mile trap speed (122 stock vs 127 tuned).
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 04:39 AM.

story-0
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-1
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-2
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-3
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-4
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-5
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-6
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-7
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-8
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-9
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE