Grumpy666

Have any of you guys with K2 mods or higher, that have had your ECU re-flashed with the new MB program, generated any new dyno plots? Any 1/4 mile numbers? Do you feel like you still have full power? Just curious to see if MB might be trying to hamstring these cars similar to what GM does with its infamous Torque Management BS. Please tell us your post-flash experience.

JokerzWld

grumpy: here is one story for everyone from this owner.
1. Did the K2 upgrade and great job from Brandon/Cory and Motorwerks as usual.
2. Got the air pump relay TSB done at the dealership and as the forum said "sumpin' wasn't right". Harsh s/c clutch engagement, lousy performance etc.
Post K2 pre TSB 1/4 mile times on stock tires 12.3/1.9/118 trap speed.
Post TSB on BFG DR 12.6/1.9/108 trap speed/LOUSY!
3. Called my Motorwerks specialists and they sent the ECU back for remapping. Spoke with Cory and he said newer program just downloaded with significant improvement, insert word HOT!!
4. She feels totally different now, I mean nite and day. Cory saya people have re-dynoed their beasts abd are getting 25 to 30 more HP and MUCH better throttle response, smoother s/c clutch onset, feels way stronger even when compared to the first K2 cycle. She'll spin the tires into 3rd gear with the esp on-noticeable! Again kudos to Kleeman guys and Motorwerks for making the whole PITA way more palatable-Joker

Ted Baldwin

...............I guess great minds think alike.......just kidding! I literally just got back one hour ago from doing a dyno on my G55 K4. I like figures and numbers. I did the recall ECU flash and I felt that my car was faster after the ECU re-flash by the dealer. I dynoed it today...........I was wrong! Car was 491HP and 527Lbft of torque before. Now car is 479HP and 489Lbft of torque. A/f ratio is starts out ok at 12 but goes lean up to 14 towards the end of the run. The next run was worse as the car ran very rich...........it looked like the car detected pre-detonation and changed the timing accordingly. Had a final strange last run of 460HP and 537Lbft of torque. So off to Kleemann the Ecu goes tomorrow to re-insert my K4 program. It really looks like the ECU recall reflash does mess things up.

............I ran my car at the drags after the recall work and did 13.1 @ 104mph in 90 degree weather. My best time was 12.98 at 103.99 in 60 degree weather, before the recall work was done. So I though my car was okay since my mph was the same and the temp was 30 degrees hotter. I was actually thinking of not having the ECU re-programmed by Kleemann............I now I definitely will have it done.

Ted

Ted Baldwin

........I think this secondary air injection pump recall is a hoax. I think the only reason MB issued this recall is to reflash ones ECU. The Ecu's are not even being reflashed to stock, rather MB is installing new programs and hidding the location of programs that tuners use to modify ones ECU. First of all, replacement of the secondary air injection pump does not require that the Ecu be reflashed to begin with. I am not usually a conspiracy theorist, but I think MB is deliberately trying to throw cold water on the supercharged V8K tuner market in advance of the release of the new AMG 63 series. If you have an E55 K4 for example, you'll have no desire to buy an E63 even if E63 turns out to be faster than stock E55. I think MB knows this.

..........On my particular ECU, during the recall work MB hid the location of the load limiter for the engine so that the load limit cannot be raised. Work is still in progress to undo what they did.

Ted

sly55

woah, thats really interesting, i love conspiracy theorys! Is anyone else on the MB conspiracy theory band-wagon or have any more evidence?

Rock

It's fact, not theory. I was told that with this new software re-flash they have issued, they have not only corrected the problems with the secondary air injection system, but they have also made changes as to where they are storing the code string for the secondary O2 sensors. In the past, it's always been stored in non-volatile memory, which means it was never a problem to change the string code to tell the ECU the car does not have any cats. With this software update, MB/AMG has moved the O2 code string into Volatile memory. You can still change the string code, however, as soon as you remove power from the ECU, the coding will automatically revert back to it's stock setting (stock setting is "Hinter Kat Diagnose ein" which means rear cat present, or "in"). In short, it is no longer possible to tell the ECU the car does not have primary catalysts with ECU programming. It seems as though Mercedes-Benz is getting "wise" to what aftermarket tuners are doing to the ECU for headers with no catalysts, and they're making changes to prevent the tuners from changing the coding.

Rock

Grump, interesting that you post this. Who are you? I always enjoy you sharing your knowledge but why the interest with this issue? Do you own an E55 or were you sent here by MB to spy on us?

Vetluver

I just got mine back from the 30k checkup and that did the reflash as well as the recall. I definitely feel that the car does not have the torque it had before the tune up. I have a totally stock set up with no mods.

Has any one else noticed the change without mods?

Do any of the after market tuners offer upgrade ECU flash to maximize HP and torque?

Coalman

I have a totally stock 2003 E55 and had new ECU installed with recall due to other problems. Obviously MB also programed new ECU with latest software. Car seems to run smoother and quieter than before, but also slower. Not much difference, but I can tell not quite as fast as before. I wonder if MB has a more aggressive software that they can install, or at least go back to original software on 2003. If anyone can shed some light on this question, it would be a great benefit to the rest of us. (By the way, ECU reset doesn't make any difference.)

eclou

probably like one of the Microshaft critical windoze updates. They don't want any 55's embarassing the new 63's.

TM btw can be 100% removed from any GM car for $75

Grumpy666

How about day-to-day driveability? Do any of you guys notice a difference in the way your car responds to the application of throttle? For example, if you're cruising along at a leisurely pace and you start to accelerate, does it now downshift before the S/C kicks in, or vica versa? Any other differences?

Has anyone datalogged to look at timing or manifold pressure? If the bypass valve under the TB is programmable, that would be an easy (and stealthy) way to limit power.

hsandhu21

Just posted this over in the cls55 forums figured it pertained to the same situation..
Well this could be all in my head but since the day i had the car serviced and the recall done, the car doesn't seem to pickup in any gear other than first or when i downshift the car into the optimal gear that seems like the only time it gets on it, before when i would be taking the on ramp to the freeway i would just punch that gas and move in now i'm constantly forced to downshift, for the car to even barely kick.

Anyone think maybe we should take this over to the "amg-lounge" for some venting?

PTE

Sometimes I wonder do we really own these cars. Some days I feel like my freedom of expression has been inhibited. Just food for though.HMMM ___PTE___

Jrocket

My car is completely stock.I took it to the track a few Fridays ago and it ran fine,then took it to the dealer for service and at the same time they did the latest ecu flash.I didnt even know they did the flash or did I read any of these threads about the new flash.The very next Friday after I got it back from the dealer it ran the exact same time and the conditions were even worse.The temps were 20deg hotter and the humidity was very bad that day,and I havent noticed any different daily driving quirks from the car.


91deg Humidity like Florida!
60ft 1.81
1/8th 8.20
mph 92.89

I think the times are correct but the mph clock reads high there for some reason.

BiTurboAmg

I had my car dynoed today after running a 13.06 last friday at the track. The car was good it put down 454hp and 525lbft. I know some of the other k2's have more power but I was happy. We did notice it is running very rich at 5k rpms and above. I sent the dyno to Cory and I am waiting to hear back from him to see what he thinks. BTW the night I ran it was 90 and I am at 5320ft. This explains some of the issue but I need to get down to a 12.7 or 12.8 this week to make me feel better. I had the ecu re flash done before my mods but my cel is always on and we cant get rid of it???

sly55

I have posted before that my stock 05 e55 felt the same after reflash, but since after reading all the complaints i got paranoid and curious! when i first got the car it would easily trip the esp in first and sometimes second (in a straight line). But being very hot over here i hadnt done much thrashing since i got it back from reflash.. Anyway last night i took it out for a test, and put it in dyno mode. It doesnt even spin up first gear from a very slow roll on! it just hunks down and accelerates! I need to stall it on the brake a touch and then it will bag right up, but other than that it really isnt the beast these cars were originally famous for! Definitly has lost torque.

As above CAN STOCK OWNERS GET A TUNED UP ECU PROGRAM THAT WILL AT LEAST GIVE US OUR ORIGINAL PERFORMANCE!?!!??

vrus

I will let you know soon.. Trying to get my car on the dyno also.. once I fix my shredded belt, I'll do another pull.

dragonAMG

Those are pretty good numbers considering your conditions (temp and alt).

BiTurboAmg

We will see what happens after I get the car leaned out a bit. I talked to Cory today and he was sending my dyno over to the programmer to see what he can do to take some gas out. Once they see what they can do I will ship out my ecu to him and see what happens. Any one know what will happen when they lean it out? Will I make more power or the same power or will I just gain some more power on the top end. It gets off the chart rich at 5k rpms. Do you guys think this is why my trap speeds were so low (104 and 107). Thanks for any help guys and we will see what happens.

Grumpy666

It would be easier to make a prediction if you post the dyno plot. Can you do it?

BiTurboAmg

I dont know how. If you give me your email I can send it to you if you know how to post??

Grumpy666

Sent you a PM.

Grumpy666

Here's a plot of the file that 06E55 sent me to post. Unfortunately, it does not contain torque or A/F ratio data. Max STD correction values for the two runs are 452 and 440 HP. Uncorrected power for two runs is 372 and 361 HP. The runs appear to be about one minute apart.

Ted Baldwin

..............this is exactly what is happening to the cars with the ECU reflash. THERE IS A BUILT IN LOAD LIMIT in the reflashed ECU. As you got WOT, the engine pulls timming. Those that "think" their cars are fine simply have not dynoed or gone to the track. On evryday driving, the car may seem just fine. Infact, I though my car was faster after the ECu reflash till I dynoed it.

Ted

E55 RUSS

Did you get updated Kleemann ECU ???