Hi all,

Just wanted to get your feedback on a few issues I've been having with the car. Also posting this in the E forum since you guys are so much more after than our CLS area.

Current performance mods are as follows:

Eurocharged Tune Stage 2 (24lbs. boost)
Weistec Bosch Silver Plugs
K&N Filters
Straight Pipes
93 octane

I've been getting pretty significant "bucking" that I've seen described here on initial throttle-tip in when the motor is below operating temp. Especially on colder or low humidity days. Has anyone figured out a resolution to this? I've also tried fuel system cleaner and that helped but only for a week or so before it came back.

I've also seen my engine rev ever so slightly on it's own here and there. Just a little jump off idle. It happens very rarely and thus very difficult to capture on video. Always while in drive, usually with my foot on the brake stopped at a light or something.

Also, does anyone have any throttle tip-in lag when the car is up to operating temp? My car is Jeckle and Hyde when the engine is cold versus warm. Super sensitive throttle when cold and laggy when warm. I do TCU resets pretty often because most of my driving is city driving on cold motor which is obviously terrible for responsive, quick shifts.

Last question, does anyone notice that their car seems to choke for air upon WOT? During highway WOT, I feel like the car is struggling to redline almost like their is resistance, perhaps not getting enough air or something along those lines?

I'm sending my ECU back to Eurocharged to have them look at the A/F ratios any other data logged in the next 2 weeks. I'm hoping they can help diagnose these issues.

Appreciate anyone's feedback, advice or questions.

Thanks!

 

I brought my 2012 bi turbo into the dealer for this exact problem (REALLY bad when the engine temp is cold).
They were able to reproduce it and said the ECU and TRANS had an updated firmware/software that they installed/flashed and that dramatically improved the bucking. I can still get it to happen, but it is so much better now.

The rest of your questions I don't know, don't happen to me.

 

this happened to me a while back after got tuned, turned out to be bad spark plug (tip broke)... changed spark plug and all good

 

Ok, cool. I will ask about this. Thank you!

Oh man, I hope that's not the problem. Just had the Weistec plugs installed 5k miles ago! I was able to get a tech to do it off the clock at the dealership but they shut that down immediately after they did my work.

 

Sounds a lot like a bad spark plug, you should have a CEL from time to time come and go don't you?

 

There's a bulletin on this... Get the tcu upgrade but make them keep the car overnight to replicate the issue and plan on meeting them in morning to demonstrate issue

 

Never had a CEL. That's why I'm torn on if it's plugs or not. Only had the Weistec Bosch plugs in for 5k miles now.

Thanks Peter. Any idea on where I could locate the bulletin to show my SA?

 

Aside from the software upgrades that your dealer should be doing. My guess is either the spark plugs that needs replacing or depending on where you live. The gas you put into you AMG will also affect the way your car drives. I've always use Mobile or Shell 91. Not sure what kind of gas you use, but you might give them a try if your not using it already.

Good luck.

 

Hey David,

Thanks for the response. I was just re-reading your spark plug thread. In regards to the plugs, I'm not getting any CEL's. Does that mean I can still have bad plugs? Can the dealer check from this?

I use 93 octane Shell from the same station every week. Perhaps I can change brands and see what that does.

Thanks,

 

Hey. I have been fortune that that I have not seen a misfire from my E63 even with the extensive of my upgrades, but from what I have learned from this forum. Misfires from the spark plugs will produce Cels poppy up.

If your not getting cel warnings, I would ask your dealer do a software upgrade check and at the same time give Mobile 93 gas a try.

On a side note. If you find that you need to replace your spark plugs, remember to gap it at 0.022 as a value member advised.

Good luck man.

 

Thank man! I'll keep everyone posted. If anyone else has any ideas or suggestions, please let me know. Plan on taking the car in on Thursday.

 

CEL can take a while to popup.... i was getting the idle rpm stumbles you were mentioning, for about 2-3 weeks before i got CEL.... it depends on how often you drive.

if you have a scan tool, plug it in and look for misfires as the car should be storing the fault codes... on misfires, it will only show a CEL when it logs enough misfires in certain amount of time = the car ecu sees it as an ongoing problem and not a random issue like bad tank of gas

 

I don't have a scan tool. Any recommendations of which one to purchase?

 

Service Campaign 2014050002 JUN14 – 2014 212 & 218 transmission control module (TCM) does not correspond to current product configuration low transmission oil temperatures combined with certain driving patterns may affect engine running characteristics, dealer will update TCM software. Approximately 640 vehicles affected.

 

When you bring your car to your dealer for software upgrades, tell your SA of what you are experiencing and ask them to do a cel scan for any defaults stored and the dealer should be able to find the problem your experiencing.

 

Your the man Peter.

 

Back at you!

Op: pm member: konigstiger

Ask him to please give you any bulletins associated with your VIN and of course provide that number to him

It's thanks to him we have all these bulletins

 

Thank you Peter! Thanks to David as well. It will save me from having to buy an OBD2 scanner for this issue. Probably good to have one though just in case down the line when you have a tuned car!

 

i used this one...will pay for itself on the first use as cost is cheaper than one dealer diagnostic scan

https://jet.com/product/detail/ebc00...t4gaAjuY8P8HAQ

 

dealer will charge you for scanning your car... usually 150 at dealer

buy a scanner as you will use it many many times on a benz

unless you prefer going to dealer each time (not very convenient) and pay 150 each time

 

Best of luck man and please keep us posted.

 

If the car in question is still under factory warranty and the fault is not related to any tune. I doubt dealers will charge a fee. If it's out of factory warranty or the issues is related to tunes will be another story.

 

I second the iCarsoft 980. Great tool for diagnosis, gives you the scanning and code clearing capabilities of an Star Diagnostic tool, just without the ability to modify anything in the modules. Great for clearing module fault codes that a generic OBD 2 scanner cannot.

 

its 2012 so is either out of factory warranty or will be soon

also original post states its eurocharged stage 2 tune, so its tuned and has straight pipes... that one will be kinda hard for dealer to miss

regardless, if you have a tuned car you need a scanner.... its a no-brainer.... ive used mine well over a hundred times between my e55 to c63 to e63

 

Correct. The warranty is out on 3/31. It's going in on Thursday. Fortunately, I'm friendly with my SA. My VIN didn't fall under the service bulletin so they will have to scan for codes and potentially cold start it the following morning and try to replicate it. With my luck and the warmer weather here this week, I doubt they will be able to. I was told if the ticket is at least opened before my warranty expires, I can bring it back after it expires and still get it covered.

Thanks for advice on the scanner. I'll pick one up!