Dynoed my C55 this weekend...
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Senior Member
Joined: Jan 2011
Posts: 395
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From: Northwest Indiana/ Chicago
2006 C55 AMG, 2005 E55 AMG
Dynoed my C55 this weekend...
..and I'm not happy.
My best run was a 305 WHP
I have headers/modded airboxes/tune/K&N's and I ran a mixture of 100/93 octane gas
It was on a Dynocom dyno which does read lower but I wasnt expecting this low.
They were also 4th gear runs.. Should it have been in 3rd? I was expecting around 340 WHP and this falls way too short.
I have attached the dyno sheet here, check it out guys.
My best run was a 305 WHP
I have headers/modded airboxes/tune/K&N's and I ran a mixture of 100/93 octane gas
It was on a Dynocom dyno which does read lower but I wasnt expecting this low.
They were also 4th gear runs.. Should it have been in 3rd? I was expecting around 340 WHP and this falls way too short.
I have attached the dyno sheet here, check it out guys.
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From: East Bay, Bay Area
2002 C32, 2012 S550
I'm pretty sure they usually dyno in 3rd.
Eurocharged only dyno'd my car in 4th to get a better reading of my AFR's at the top of the RPM's
Eurocharged only dyno'd my car in 4th to get a better reading of my AFR's at the top of the RPM's
Last edited by Gramma_Benz; Oct 8, 2013 at 04:40 PM.
Thread Starter
Senior Member
Joined: Jan 2011
Posts: 395
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From: Northwest Indiana/ Chicago
2006 C55 AMG, 2005 E55 AMG
MBWorld Fanatic!
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From: Western Canada
2013 C63 AMG P31, 2014 GMC Sierra (6.2)
There are many variables at play (IE: Temperature, humidity, elevation etc).
I ran 305 HP and 316 ft-lbs on a Mustang dyno in 4th gear. My only mods are a Renntech airbox and K&Ns...
I ran 305 HP and 316 ft-lbs on a Mustang dyno in 4th gear. My only mods are a Renntech airbox and K&Ns...
Last edited by wawy; Oct 10, 2013 at 04:34 PM.
Thread Starter
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From: Northwest Indiana/ Chicago
2006 C55 AMG, 2005 E55 AMG
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From: Canada
eclectic assortment of cars
Any before dynos? I know it's difficult, but you have to think of the dyno as a tuning tool and look past the pure numbers. If you have a dyno of a stock car on the dyno, then you can see the changes.
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Thread Starter
Senior Member
Joined: Jan 2011
Posts: 395
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From: Northwest Indiana/ Chicago
2006 C55 AMG, 2005 E55 AMG
This was my first ever dyno run in the C55. Im getting a lot of responses saying dynoing in 3rd gear instead of 4th will make a big difference though.. I'm going to try that this Saturday.
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From: East Bay, Bay Area
2002 C32, 2012 S550
yeah, bottom line, it's just a number to start with. What really matters is 1/4 mile times. For example, you may dyno 300HP, but if you turn out 12sec 1/4 mile times, who cares??
If you ever tune or mod again, you go back to this same dyno and find out if you are better off or worse.
If you ever tune or mod again, you go back to this same dyno and find out if you are better off or worse.
lets see Saturday
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eclectic assortment of cars
I was in a similar situation with my S2000. I didn't manage to find the time or money to get a dyno run before I supercharged it. After installing the supercharger, I had to get it on the dyno for some light fuel tuning, and only made 270rwhp (was expecting ~300rwhp). Rather than chasing ghosts, I just drove it and enjoyed it (and still do, but now I have 997 fever).
Later, a friend and I installed the same supercharger on another local guy's S2000, and it basically made the same power on the same dyno, so I haven't really worried about it since.
That said, now I have a supercharged baseline, and I've since added a big bore throttle body and J's Racing headers, so I would like to get out there and dyno again to see the gains those two may have made. Bottom line, the best use of the dyno isn't for looking at numbers, but for use as a tuning tool to see the 'delta' various modifications may have made.
Later, a friend and I installed the same supercharger on another local guy's S2000, and it basically made the same power on the same dyno, so I haven't really worried about it since.
That said, now I have a supercharged baseline, and I've since added a big bore throttle body and J's Racing headers, so I would like to get out there and dyno again to see the gains those two may have made. Bottom line, the best use of the dyno isn't for looking at numbers, but for use as a tuning tool to see the 'delta' various modifications may have made.
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From: GA
2016 Chevrolet SS, 2006 Cadillac STS-V
Unless you get a before and after on the same dyno in similar weather conditions, don't get too hung up on it. I was very upset with my numbers after I put the supercharger on my car and then when I put the Kleemann headers and full custom 2.5" exhaust, I only gained 10 whp on the dyno but I got a huge gain of half a second in the 1/4 mile.
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From: Sweden
2011 C63 AMG, 589hp
You did ofcourse run it in Dyno mode?
If you did, try clear ecu before dyno.
I have noticed the tractioncontrol is adaptive and controls the throttle, to the point were the car accelerates to 5secs to 60Mph no matter what power you have.
Almost i´m starting to guess it´s an 'G sensor' that restricts power to a limit.
With fresh cleared ecu my car just smokes the tires hard in third gear.
And cruising a bit doing some runs on street,, *poff* no more smoke. just in 1st gear.
The tractioncontrol has learned again, no better than 5s to 60mph no matter what.
If I´m doing a hard launch the car feels totally powerless in 2nd gear.
Clearing ecu.. BAM!! the car is running hard again.
I´m about to get reprogramming of this when adding compressor.
Rgds
Patrick
If you did, try clear ecu before dyno.
I have noticed the tractioncontrol is adaptive and controls the throttle, to the point were the car accelerates to 5secs to 60Mph no matter what power you have.
Almost i´m starting to guess it´s an 'G sensor' that restricts power to a limit.
With fresh cleared ecu my car just smokes the tires hard in third gear.
And cruising a bit doing some runs on street,, *poff* no more smoke. just in 1st gear.
The tractioncontrol has learned again, no better than 5s to 60mph no matter what.
If I´m doing a hard launch the car feels totally powerless in 2nd gear.
Clearing ecu.. BAM!! the car is running hard again.
I´m about to get reprogramming of this when adding compressor.
Rgds
Patrick
