I have tried diligently to find any new info on the 63 series motors producing very low numbers. I have read over and over that they are only producing around 380whp which is nowhere close to 507crank hp as rated. This has me concerned because I thought of buying the CLK Black. If it only makes 380whp I'd be pretty upset. Anyways, does anyone have any new info on these issues? Was it addressed and fixed? What was it? It seems as though this topic was in full force as everyone was complaining at the end of the year and all of a sudden nothing has been said since. If anyone has some info please send me a pm or a link to any updates. I am a bit worried about spending 135k or so and then being very disappointed. On a side not, my current AMG ran exactly what was posted in all the mags first and only time out. So, I do find it a bit strange that AMG would drop the ball on a performance issue....

 

There are a few producing a bit higher numbers now, ill dig it up if u want. Bottom Line: IMO the 63 is a flop specifically relative to the 55k motor, i watched a few with my own eyes run down the strip with poor trap speeds. The 63 is loud but just doesnt perform like it should and has been a big dissapopintment to the AMG crowd. In a CLK with some ECU tuning maybe it will be fun, but it just doesnt "run the numbers" as we say I hope this helps.

J

 

Definitely a little dissapointing to hear DivenAgain, but thanks. I hope I hear something a little more encouraging from other's.

 

This has been a big debate on mbworld.org. Some claim its just as fast as the old 55k and others disagree. Some have stated that after the break-in period of a 1,000 miles or so, it gets it's full power potential.

Also, a gentlemen on that forum that is really knowledgeable with Mercedes, states, that if you remove the charcol filters in the 63 motors, you can gain some very good additional horsepower.

I hope this helps a bit.

 

The HP figures on the E63 are definitely not where they should be. For some reason the CLS63's are dyno'ing higher than the E's.

 

Thanks guys for the info. I will keep digging

 

why is this so difficult to confirm? wouldn't someone just put the car on dyno or post performance figures? It's an automatic so launch should be no brainer.

charcoal filter is for the interior. how would it have any performance gain is beyond me....

 

charcoal filter is for the interior. how would it have any performance gain is beyond me....[/QUOTE]

If you ever find the answer to that, please share...

It was stated in a post on mbworld that they are in the air-box along with the air filters. The person stated that the new BMW M5 owners have been doing this samething and have been getting a great amount of free horsepower just by doing that.

 

Actually it has been confirmed over and over again with dyno figures and time slips, the 55K motor clearly outperforms the new 63. The charcoal filters that they are referring to are not the cabin filters, its a new filter added to the airbox on 07+ cars and the removal of this filter results in some rwhp.

heres a dyno of a before and after ECU upgrade on a 63, for comparison purposes look at the stock numbers as this about what the 63's are averaging:




as compared to this 55k dyno:

 

A lot of E63's have dynoed @ 428 RWHP and 410 RWTQ. After 1500miles. The low readings that were seen were the first wave of E63's. There has been some talk about the intake manifold change was made after the low readings. My personal E63 is as quick if not quicker than my old 03 E55.

 

there have been no intake changes on the 63's confirmed by AMG, and although it may seem quicker with higher revs and a 7speed, but if you raced both of them side by side ill bet you the winner to 120mph, let me tell u as much as i would like the 63's to do what they are supposed to they just plain dont, sweet car by the way turboRob im really not a hater as i own a NA AMG myself also, but i live by the facts

 

If you look at all the latest dyno's both E63 & CLS63. The numbers are much better then what you posted. Also On the mbworld board a member just went 12.79 starting in second gear ( due to a software update that is needed ) My old E55 was bought buy a friend, We have run up to 140. With the E63 ahead buy two cars. Now i ran the E55 in Oct. 07 before i sold it at Firebird raceway here in Phoenix. Best run was 12.46 @ 115mph. I will go to firebird with the E63 in april to see what it will run.

 

Well to be fair Rob I pulled out two dynos that didnt have a huge discrepancy, because as you know there are many E55's that are making bit more HP and especially TQ than the E55 that I posted while there are only a handfull of 63's making those higher numbers (i hope they continue to) albeit with a relatively weak torque figure. I have witnessed back to back runs of both cars on the same track with the edge always to the E55 unfortunately the data is obviously still in the favor of the 55K motor, dynos and 1/4 times. Come on and run that 63 id be interested to what it does. When a bone stock 63 does 11's i guess ill shut up. Oh and next time u two decide to race, video tape it im teasin

 

I will tape it next time we go at it. I agree about the torque you can feel the difference between the two. I could pedal the E55 thru tire spin but the E63 hooks and books better out of the hole. Bye the way Nice numbers from your CL!!! Whats the sixty foot time ?

 

Here's a video of the 63 vs. the 55. In this clip the 63 is clearly faster, but the video was made by MB and AMG so it could very well have been an "unfair" race. I have heard that people think the 55 is faster, but that may just be a matter or perception. With the supercharger there's more torque at lower RPM as others have said so maybe people just think the car is faster.

http://www.youtube.com/watch?v=WIaSzJyb08A