6.2AMG

hey guys
so Eurocharged came down to Montreal today and i was originally supposed to get my ECU flashed but it turns out that when i brought in my car for service last week because of my 8th CEL in a month...the guys at MB told me that they need to replace my ECU and that ill only get it by next week lol
great timing and great luck...lol wtvr ill have to ship it out to them instead...sucks though...
anyways,long story short i decided to get my car dyno'd...for before and after purposes...
there were 2 ppl with c63 p31 and they all got around 429~431 whp
and i got 418~421 whp...isnt the E63 stock supposed to be more powerful?? isnt the M156 tuned higher in the E than in the C? i dont get it...
anybody else dyno their cars and got similar results???

ALSO,i did a before and after with a charcoal delete and K&N filters and i actually lost power at around 4000-4500...theres like a dip on the dyno....wtf??!!! lol did anyone have this issue??

otakki

The whp loss in E compared to C sure is mind boggling.

6.2AMG

tell me about it....its rly weird....
the guy with the C63 was next to me and was soooo giddy when he saw it only went up to 419 on the dyno... lol i was "undercover" mad at the results...

Vic55

Some people felt in the past it was the MCT that lead to the big drops. Were the C63's MCT's??


But the recent 63TT dynos are revealing that the MCT is not dropping that much power .... or the TT's are underrated.

6.2AMG

i have no clue...all i know is that one of them was a 2011 Affalterbach and the other one was a 2010 but had the p31...

Vic55

Then neither had the MCT- the 2012's got the wet clutch...

6.2AMG

nice.....so basically,those results are odd... i was pretty annoyed to see that the stock output on a car thats supposed to be 518 has less power than a c63 thats in the 480's....

Vic55

Actually based on the many dynos runs posted/done on the boards it seems almost to the norm- the MCT cars dyno with less hp.

My E63 dyno'd 370 on a stupid low dynodynamic reader in 100 degree weather. They told to adjust about 15% upwards on this dyno based on the countless dyno comparos they had done with same cars on different dynos. This meant I was around 430-435 hp. But my car ran just fine in rolling races with stock c63's.

Too bad you didnt get to do a few runs with those cars. That would have given you some real world perspective.

6.2AMG

Vic,you have a great point...
i mean in the end even the dyno guy told me that you can't rely solely on the exact output of ones car from a dyno ...its basically a measuring tool to be used when modding...to obviously let you know that wtvr you're doing to your car either helps or unfortunately does'nt...
he did tell me at least that im the most consistent out of the cars that day...i dunno whether i should be happy or not...maybe he told me that so that i can feel better

Vic55

Try to get your car in a rolling race, that should give you peace. Also how was your tq???

6.2AMG

387.5~390 tq

Vic55

Well those numbers align correctly with your whp of 420.... so thats good.

6.2AMG

yea i guess so...i was just hoping my engine builder felt generous while making my m156 lol

otakki

What's the name of the builder on your M156?

lunarx

The E has more driveline loss.
The bigger rear wheels/tires & rotors are part of it.

MB_Forever

+1

Vic has a point here about the MCT... I remember when the 2010 E63 first came out, we saw them dyno consistently lower (by about 10 to 20 hp) than the 07-09 E63s and CLS63 on the same dyno. Back then, everyone thought it was either because the cars were too new (not broken in yet) or that the MCT was "eating-up" a bit more hp than non-MCT-equipped cars. As more time passed, more and more cars were getting broken in and dynoed at different places, but the small hp variation remained the same. In my opinion though, a variation that small, is nothing to worry about. And as Vic mentioned earlier, without a direct rolling race between your car and those other C63s, it would be hard to say that your car is slower because it has less hp.

lunarx

Do you guys really think it's the MCT?
If the MCT is the cause then 2012 C63's would dyno lower.
Is this the case?

There are alot of other variables at play comparing CLK, C63, W211 to W212.

neliconcept

how is a c63 pulling 430ish with a 480 crank with pp and 455 crank without, it should be closer to 360-380- maybe 395 with pp. E should be closer to 430.

granted the % loss would be something I don't know about on these cars since I don't have one yet.

AlbertM

Expected. I dynoed my 2010 E63 many times stock and modded and my numbers were around 405-410 stock and 450-460 whp after mods (dynojet).
Math actually works if you take 518hp with around 20% drive line loss you get around 415 whp.

otakki

Now that makes more sense for the E. C63 with 480 at the crank pulling 430 at the wheel does sound unlikely.

empunker

Isn't the P31 C63 underrated for marketing purposes? I bet it's making the same if not more crank hp than the non TT E63's.

DAGREEKNYC

the c's that were dyno'ed had to have tunes to get those hp #s.

Zod

Nono
same happed with the 55k. The E and the CLS 55 both dynoed with in the 420-430whp range, which put them at the same power level as the S, CL, SL which were rated higher from factory. It was a marketing method

also the C will pull the E, for the simple fact it makes the same power but is in a lighter format...plus the P31 has better parts taken from the SLS, so it has the edge on all other 63's that are NA

If you want the fastest 63, the C is where it is at

crazy1eye

Dyno numbers are relative to the dyno & day, in this case it was a cool day, 5-6deg C with 33% humidity & it was done on a Dynapack dyno which seems to be a bit generous especially compared to a Mustang dyno. What can be taken from this is that a 100% stock 2010 C63 P31 made ~12whp more than a 100% stock 2011 E63 & a 2011 C63 P31 with secondary cats & resonator removed made ~10whp more than the E63. Yes, we were quite surprised to see my 2010 make a few more whp than the 2011 C63 with the exhaust mods. I've only owned mine for a few months & now wondered if it was in fact already tuned so one Saturday morning, around 6am with only a couple cars on the hwy I took mine up to speed & the speed limiter kicked in just as I was passing 280km/h so it should be stock. Sorry if it looks like I'm going off topic, just trying to shed some light on the dyno day in question & the 2 C63 P31 cars.

Max.H

Thought the SLS has the highest hp NA 63?