trbo2nr

Yeah. I'd like to know the same thing.

Finny

A few clients of mine complained of the same problem and after an instal inspection I found that the idler pulley on the left hand side was put on backwards (Reversed) so after swapping it back to the proper orientation the kit worked perfectly.

Finny

See Powerchip.

djempirE55

Reserected this thread. Does anyone have a fix for the hesitation issue?

W219CLS55

no but i have this same ****ty problem

djempirE55

This issue seems to be pretty common for our cars. A forum member was nice enough to PM me this: "you need to remove the load-limits in your TCU and ECU. This can only be done by a software specialist who has experience with these cars".
Does upgrading to a faster shifting TCU correct this problem? Any additional info on how to remove these load limits would be great!

latemodel21

I had this issue in an SLK32 that was tuned by EC and running 5 PSI over stock (62mm SC pulley). Nearly any time I got into the throttle hard (mainly from a stop or near stop) it would briefly shut down so hard (around 4k or so) that if you weren't wearing your seatbelt, you might taste the windshield. I tried other tunes/tuners, went to larger injectors with a return style system (suspecting knock ... grasping at straws) and it persisted.
Finally, I saw this thread (early last year?) and sent a fresh email to Jerry at EC mentioning my suspicion of "load limit" issues (including a link to this thread) .... and the next day, he sent me a new tune that completely eliminated the issue.

Worth mentioning, it was an ECU tune (only) that solved this issue for me. At the time I was on a stock TCU tune.

Hope that helps,
Chris

djempirE55

Appreciate the tip. I'll contact jerry in the morning and tell him the issue. I know the feeling of getting too close to the windshield. Especially when you have passengers.

Induleo

I know this thread is old but i just wanted to let you know that my E55 from 06/2004 has the same issue. I also get Code P20D4, coming back after deletion once the problem reappears. I measured my supercharger pulley and it has 84,6mm, so i conclude that its not the original. I will have to further investigate to find out if my ECU is still stock or if it has been badly modified (missing to adapt/remove load limitations).

NotABaller

Resurrecting this old thread because I am experiencing a similar issue in my 2012 c63.

I can hold 4k rpm steady in second, and as soon as I floor it, the car launches forward for 0.1 seconds, before cutting power for 0.5 seconds, before resuming normal pulling.

Previously, I had a stored P1061 code "The load limit is active".

Perhaps its the torque limiter

LoGoo

Sorry to bring back this old theme but i really need some help or contact with the right guy...
Recently i bought E240 W211 2005y. Me and my friend decided ti change the engine from m112 e26 to m112 e37. Only the bottom of the engine and injectors were different so we did it. Car works like a charm but only when you delicate press the accelerator pedal.... If you try to make takeover or smash the gas the car stalls (closes the throttle instantly for a secound) and bring error P20D4 in ECU - Load limit exceeded. After reading almost whole night i see that there is some load/torque limits in EGS52 or/and in ECU. Do you know how can i get propperly change this in DAS without breaking the transmission? Help please

trbo2nr

I've since sold my AMG and recall having to send the ECU to the tuner for updating. I think the guy's name is Darrell. It's been many years (8+) and I'd have to look through e-mails. Maybe it was Eurocharged. I think the guy I spoke with mentioned removing the torque converter limiter, just not sure. Sorry I could not be of more help.

LoGoo

I hope you will find some contacts or remember more info.... is it tune for ECU or just TCU

latemodel21

Cool project!

I would try contacting Josh at the Mercedes Swap Shop. Not only does he create custom ECUs for mercedes swaps, but he also provides ECU tunes and TCU tunes ... SO, chances are VERY good that he will not only know what you need, BUT also be able to supply it to you. Here is a link to their
website https://themercedesswapshop.com/
hope that helps,
Chris

LoGoo

Hello quick update... Ive tried several motor (m112 e26, e32, e37) and gear ratio options... still no luck... the car is lean ive changed option in correction mixture menu to ENERICH its better but still have stall between 2500-3500 rpm under load and brings p20d4 error....... New MAF bosch was just not needed car behavior is same. Any ideas guys?
p.s. i found out when the car is moving there is no rev limiter on Neutral gear so i tried to floor it and even the transmission is in neutral te engine stops and then revs between 2500 and 3500 rpm?!?!??! Please help.

LoGoo

I did it thanks to benzru forum. It was **** simple...

Chevota

I don't have the load limit issue, but my car will retard timing drastically and cause the same bog. It seems, in my case, it's going into catalyst heating mode, then I assume back out of that mode when it realizes you're flooring it.
The computer isn't very smart, or fast, so I have to wait for all this to go down before it recovers, but same net result. So when it does this it basically takes ~2 seconds from the time I floor it till it actually starts accelerating. It only does it now and then, which I assume the times it doesn't the cat was warm enough so not heating mode. So look at your timing to see maybe you/anyone has that issue.
I removed the catalyst spark retard and the problem seems to have gone away, but that backfired a bit because when cold it commands a lot of power for idle because it assumes the spark is extremely retarded for cat heating mode. So when it's not retarded it revs to >2k until it's done, which I think is 30 seconds. So I set the retard to only happen at the rpms cold start sees, and I cut the amount of retard to less than half, which still works. It seems more or less fixed.
That cold start cat heating is what makes the car really loud for ~30sec after you start.
Cat heating may also change the cam timing, which can reduce power. I simply made the cat heating cam timing the same as the normal cam timing and prob solved. HP Tuners is how, if anyone was wondering. I also mention HP because you can also adjust many of the torque limits with it, which may be why I don't get those? Fyi...