venom_55

Below is the result of my dyno before and after getting a stage 2 eurocharged ECU tune.

Eurocharged guy told me I gained 80whp and almost 90wtq throughout the power-band. 100hp and 106tq at the crank. 20% drivetrain loss when converting wheel to crank HP/TQ.

However... please don't hate, as this is my experience, and your tune / situation might be better than mine...

The car feels a lot more sluggish than it did before and a lot less responsive. I had this tune now since end of July and can not feel any improvements. The car before seemed like a beast and now, not so much... Especially in E mode, I get nothing.

I purchased the car used, so maybe it had a tune and I didn't know? Not sure.. As per the eurocharged advice, I have disconnected the power to the ecu twice now hoping it will reset the adaptive strategy. Drove the **** out of it for weeks. However, still not the same car it was before the tune and is useless in E mode, and just ok in Sport mode.

I know the "dyno sheet doesn't lie", but I was really hoping I could feel it in the car seat. Especially after hearing so many others raving about their positive experience after getting the Eurocharged ECU tune. Maybe I need to go up against a stock E550 and see if I am faster, or someone with the same tune and see.

nawlinstornado

Those numbers don't make sense. I had a failed dyno run on my stock E550 and it still peaked over 380whp (never really got the engine over 4k). In fact, I haven't seen any stock CLS or E550 dynos that low. Most are in the 390-420 whp.

aznxkicker

venom u are able to turn Sport mode on and off after EC tune ? I had EC stage 1 tune on my bi turbo M278 and now the sport mode is always on and could not be turn off., however I could feel significant improvement in performance after the tune.. Im gonna do dyno later and will see the result.

venom_55

Yes. I can turn sport mode off and on, and I notice a difference between each mode, as E mode is now gutless. S mode is better but not exciting.

venom_55

Hoping Slav from Eurocharged can chime in as he was saying my results were as expected and the same when the did dyno on other E550's.

I thought the same as you. Seems low...

Any suggestions?

aznxkicker

You have downpipe ? High flow cat or catless ?

venom_55

Stock except for ECU tune

bill_097

hm...given that the delta pre/post tune is greater on the M278 vs the M273 and you actually feel that performance is worse, I think i'll hold off tuning my ECU for now.

Thanks for your post!

aznxkicker

I thought stage 2 tune is with downpipe.. If you are stock then you use have gone with stage 1 tune ? Also I have changed to high flow cat, x pipe and deleted resonator. I suggest you to do the same set up as mine for better air flowing and performance.

venom_55

Eurocharged stage 2 is an extra 20 HP / Tq over stage 1. It was another ECU program they offered and didn't require change to cats or downpipe.

I will definitely consider the downpipe next spring but wouldn't have thought it was required to notice a performance improvement over stock.

I think I need to find someone local to compare or may need to get another tune from somewhere else.

If my stock #'s look low, should I take it back to the dealer and inquire?

Jeffy

[Looking at units on top right of graph] OK so Eurocharged doesn't even know the unit of torque is lbs-ft (vector) not ft-lbs of energy (scaler). That is scary.

ngriff6825

I have the Eurocharged stage 1 tune on my 2012 E550 coupe (stock other than K&N filters) and I noticed a huge increase in power. Now traction is my biggest problem. My sport mode still works just fine. The power should be the same in E or sport mode, stock or tuned. The only differences in Sport is the shift points are more aggressive, the suspension tightens up, throttle response, etc. Doesn't adjust boost, timing, or other power related settings.

I considered getting the Stage 2, but felt it better to wait until I at least had downpipes.

I'm not sure why you would think you had a tune already on the car, the "before" dyno line clearly shows less power than the "after" line.

Also, did you have any problems with the trans. kicking down during the dyno? It seems that has been a problem with non-AMGs.

I plan to take mine to a dyno in then next couple of weeks so it will be interesting to see how my numbers compare (although may not be super insightful due to differences between dynos)

TopGun32

most tune the difference in power delivery becomes more clear after 3k RPM's.. and at around 4k....

around town.. there is more torque.. but with the lack of traction is hard to tell the extra power.

To me the extra power change was felt on the freeway/higway. Going from 60 to 120+ was way faster than stock.

This car suffers from heat soak.. Alpha/weitec/renntech all are coming up with ways to help heat soak on these engines. The stock Amg set up is a bit better but still needs to be upgraded when pushing more boost.

Over the past summer.. i experience my car felt like it did not want to down shift on really hot, humid days. I clearly remember a 90+ degree day with 70% humidity here in Cali around early September 2013.. car felt slow!

But most days.. car simply has way too much power 3800lbs, RWD and open DIFF. My 285's are almost gone and simply have no grip to even punch 50% throttle.

I have used EC before never with issues.... have them retune to stage 1.

venom_55

I don't have a lot of issues with traction since I went to 285s in the rear. Yes, traction light goes off now and then but certainly not as bad when I was in stock 255 tires. Those were horrible.

I guess it can't hurt to re-flash and see if there is an improvement or have another tune and compare. I will see if eurocharged guy knows local e550 coupe owners he tuned I can connect with to meet up and discuss. I would still like to drive side by side with another e550 with a stage 1 or similar tune as mine. Even my car versus stock would be a fun comparison.

It was actually the highway pulls where I expected to see the biggest difference, but surprisingly, just was not there.

sales@eurocharged.ca

Hey venom_55,

I'm sorry you feel this way about the tune.

The dyno we use, Dyno Dynamics, is one of the lowest reading dynos out there and this may be why your stock numbers seem lower than others as they likely used another dyno. The numbers your car put down after the tune have the same gains as what is advertised on our website.

As part of the Eurocharged policy, if you are not happy with the tune then we can flash it back to stock for you and issue a refund.

If there is something you would like us to do, please let us know and we'd be more than happy to do so.

Thanks

aznxkicker

does anyone know when we start the engine, what rpm does it go to ? I wanted the sound similar to the C63 when the engine start like and I believe the manufacturer has set to 3k rpm at start up to have that nice growl sound. I wonder if the tuner can program like this ?

laramr

Hard to argue with that!

venom_55

Ok, so I just had Weistec downpipes installed and reflashed with Stage 2 Eurocharged tune and the car is crazy fun now. Had the cats removed, so I need to get the flash to remove check engine light, and I am not used to the sound just yet, but torque is ridiculous.

Dyno results are posted below, and as per Eurocharged guys in Canada, the Dyno Dynamics is one of the lowest reading dynos out there and my stock numbers will seem lower than others posted, as they likely used another dyno.

But I am very happy with the gains and power of this tune. E mode is still like the car has no power and slow to respond, but sport mode is just intense and well worth the tune.

Adding the Weistec downpipes and removing the cats seem to help the turbos spool a lot faster and I can now hear the turbos compared to before.

Teezlr

Is this stock vs tune with downpipes?

or

Tune vs tune with downpipes?

Regardless, looks like 100 whp and 100 wtq approx. must be fun

venom_55

Stock vs tune + downpipes

I probaby should have done stock vs stock + downpipes and then vs tune but didn't think of it until after. Just did old vs new.

However... This is also very very different than the first time (look at first post dyno) of just stock vs stage 2 tune.

zulumerc

I added the KLEEMANN catless down-pipes and the stage 2 tune and your observations are spot on. The throttle response, quick turbo spool, and torque delivery is greatly improved!

TopGun32

run 3 gallons of E85 if you have a chance.. then report back about your throttle response.

I speak from experience.. the extra octane will be candy to your tune and engine.

Right now i'm running 3 to 4 gallons of E85 on every fill up.. car is super strong!

To the point, I'm not going to put on DP's.. probably end up leasing a new C63 and tuning it . The lack of traction (open diff) is prob the only regret i have about this car. But in all E550 coupe is a rare bird that with tune and DP would make other cars feel over priced.

venom_55

No E85 where I live, but have you tried octane boosters? Not sure if those are scams or not.

We have 94 at a few gas stations so will look to use that gas and see if I notice.

Either way, very fun tune but if better gas or an octane booster with fill up helps throttle response I will give it a go. Thanks for the suggestion!

zulumerc

I have e85 about an hour away from me and we have 93 octane readily available. Can our cars take straight e85 or do we need to have a certain percentage of 93/e85? What does the e85 do for the vehicle? I used to run 100% methanol injection on my corvette..has anyone done that to the e550?

PaulE550

Question: The owner's manual for the E550 (page 376 for 2015 model) says to NOT use E85 as it may cause engine damage. Is this now inaccurate? I know ethanol can have a corrosive effect on the fuel system over time. Especially as the percentage of ethanol to gasoline is increased. Has MB done something to eliminate this problem associated with higher percentage ethanol use? Thanks.