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Old Sep 29, 2020 | 08:18 AM
  #1  
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2017 c63 amg, Catless DP, Velos tune
TCU Tune

I just wanted to see if anyone could tell me about their experience with a TCU tune. I have been surfing the boards and reading a few threads. I have a decent understanding of what the TCU tune does but I want to hear someone's experience.

What was the first thing you noticed?

Was it worth it?

Who is the tuner?

Are you satisfied with your purchase?


Thanks for any responses.
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Old Sep 29, 2020 | 08:38 AM
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I dont get why people even need it. My car with a tune will destroy the tires in second gear in 85 degree weather and nevermind first gear.

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Old Sep 29, 2020 | 09:12 AM
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Originally Posted by skratch77
I dont get why people even need it. My car with a tune will destroy the tires in second gear in 85 degree weather and nevermind first gear.
I have to agree with you, more so , due to the limited companies doing it, and the process involved, cost, and cost if it needs to be re-flashed due to a dealer update, and on 1 particular tuner, they are just A-Holes about it.
Most people dont understand the TCU, and are just asking or jumping on board, because its the NEW keyword they are hearing....

One thing about MB, is they designs and over engineer there systems to definitely protect the car (engine, transmission) , when it comes to the TCU, there are scenarios when a TCU tune would benifit , and most others it wont, and is just a waste of money.
Worse, setting yourself up for some failures.

As @skratch77 has stated , with a decent tune, you cant get enough grip on the rear-end to even justify trying to put more down.

So I guess there are those, that just want to say, hey I got it ... I for one, am staying away from it.
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Old Sep 29, 2020 | 12:38 PM
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Thanks for the responses. My tune already makes 1-2 gear useless. I see what you mean by the tcu tune not making a difference.

I am open to changing my mind. That is why I wanted someone with the TCU tune to chime in with their experience.
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Old Sep 29, 2020 | 01:02 PM
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If the TCU tune allows for quicker, firmer shifts and keeps the ECU and TCU seeing the same, accurate torque output then I think it might be a good thing for longevity of the transmission.
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Old Sep 30, 2020 | 09:19 AM
  #6  
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Originally Posted by SJGetsome
If the TCU tune allows for quicker, firmer shifts and keeps the ECU and TCU seeing the same, accurate torque output then I think it might be a good thing for longevity of the transmission.

I never thought of it like that. Last thing I would want is my tuned engine tearing up my transmission. I am sure a new transmission is pretty costly. Does anyone upgrade there transmission?

I would think that is only relevant if your trying to push major power.
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Old Sep 30, 2020 | 09:39 AM
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Also keen to hear someone's real world experience
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Old Sep 30, 2020 | 12:04 PM
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Is there anyone at all who has had this done on their W205 C63? So far I’ve seen 0 results on this platform, yet EC claims to have sold 100 of these flashes. Not a single one review or dragy results for the C63? I have a feeling it does nothing for acceleration in 1st and 2nd... hence, the deafening silence.
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Old Sep 30, 2020 | 04:47 PM
  #9  
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Originally Posted by AlexZTuned
Is there anyone at all who has had this done on their W205 C63? So far I’ve seen 0 results on this platform, yet EC claims to have sold 100 of these flashes. Not a single one review or dragy results for the C63? I have a feeling it does nothing for acceleration in 1st and 2nd... hence, the deafening silence.

Yes same here.

I have seen tons of threads talking about it and all the claims but have not heard one persons experience. I think one thread talked about having to have whatsapp and the tune in order to be in their special group

I am an interested consumer. Just want some real world feedback.

I did speak with my tuner (velos) and they said the stock transmission in fine up to stage 2. As well as another local tuner in Dallas.




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Old Sep 30, 2020 | 05:27 PM
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I have a 2020 C63WS, and I just installed catless DP's. Additionally, I did the ECU, TCU, and CPC software.

It is a new animal with everything....
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Old Sep 30, 2020 | 05:42 PM
  #11  
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Originally Posted by EB_C63
I have a 2020 C63WS, and I just installed catless DP's. Additionally, I did the ECU, TCU, and CPC software.

It is a new animal with everything....
umm yea ok..
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Old Sep 30, 2020 | 05:57 PM
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You question my statements??
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Old Sep 30, 2020 | 06:00 PM
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Originally Posted by EB_C63
You question my statements??
its not a matter of question.. just observation..
Congrats on the car.. how many miles ya got on it ?

and to clarify, I am not calling you out or anything, I know you had posted on some other threads in regards to the tune and TCU, and had a few problems prior or such.
The issue is, there are NO REAL WORLD facts or anything that points to benefit other then "peoples feelings" thats all..

I knew someone who put octane booster in the tank and drove off, and swore it was the fastest car on planet earth because he could FEEL the power...

so, mostly when this gets brought up, more so, since some of the guys at EC were complete d!cks to people on here, it just makes it all SHADY... SHADY...

2ndly, I dont see much in what was done, that a TCU is worth it, or could amount to anything that could be benefited from, since even in the stock form, its very hard to keep the wheels from spinning , more so with a tune, etc etc..

but again, IMO, since I have yet to see any "PROOF" just heard about that unicorn a few times

Last edited by FLC63s; Sep 30, 2020 at 06:12 PM.
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Old Sep 30, 2020 | 08:48 PM
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Well said.
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Old Oct 1, 2020 | 09:12 AM
  #15  
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My car has ~3k miles on it, and yes... the process to get all the tunes done had some hick ups for me. Originally, it was going to be a bench flash on my ecu & that was it. Then the day I was suppose to send out the ecu there was a new method they "just finalized". So it was decided that I would just flash my ecu & tcu via the obd port, and install a new CPC module. I wasn't happy about the curve ball last moment, and not to mention the cost went significantly higher with all that had to be done.

However, I was able to drive my car after each flash, and after doing the CPC last. The CPC, on the newer cars 2019+, allows the car to put down maximum power & torque at any given time from my understanding. It definitely allowed the car to do a lot more, even if the extra available power results in more wheel spin (which is fun).

I had a 2k mile rally with 80 cars the day after everything was done, and the car performed flawlessly on the roads and on track. It was out pacing lots of high dollar performance cars..... I'd do the whole process again, and that is confirmed every time that I turn the car on

Cheers!
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Old Oct 1, 2020 | 10:09 AM
  #16  
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Originally Posted by EB_C63
My car has ~3k miles on it, and yes... the process to get all the tunes done had some hick ups for me. Originally, it was going to be a bench flash on my ecu & that was it. Then the day I was suppose to send out the ecu there was a new method they "just finalized". So it was decided that I would just flash my ecu & tcu via the obd port, and install a new CPC module. I wasn't happy about the curve ball last moment, and not to mention the cost went significantly higher with all that had to be done.

However, I was able to drive my car after each flash, and after doing the CPC last. The CPC, on the newer cars 2019+, allows the car to put down maximum power & torque at any given time from my understanding. It definitely allowed the car to do a lot more, even if the extra available power results in more wheel spin (which is fun).

I had a 2k mile rally with 80 cars the day after everything was done, and the car performed flawlessly on the roads and on track. It was out pacing lots of high dollar performance cars..... I'd do the whole process again, and that is confirmed every time that I turn the car on

Cheers!
Congrats... were abouts you located ?
And yea, here in Boca we have every supercar, hyper car, etc etc etc , lately I have been eating all the Lambo SUV's I see, as well as some Track Cat's, and Hell Cat's .. its fun.

I am just trying to validate the TCU tune of things.. I know wheel spin is fun , but I am not into just eating tires for the hell of it, or just smoking them up just for grins. (and that can be done from Stock mode)

But I am glad your running the car it was designed to be.. I drive mine like I just got it the same day, every day, and it loves it.
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Old Oct 1, 2020 | 10:12 AM
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Thanks man, and I am in Indianapolis.

Not many hypercars around here, but plenty of 570s, 458's, huracan's, etc.
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Old Oct 1, 2020 | 10:14 AM
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Originally Posted by EB_C63
Thanks man, and I am in Indianapolis.

Not many hypercars around here, but plenty of 570s, 458's, huracan's, etc.


Yea its pretty insane the type of cars we get here.. more so are the "kids" that daddy lets drive them, or that they bought them for...

Cant tell you how many Ferraris, Lambo's, etc I see smashed, spun out, and or just plain dumb moves..

I need to archive all the dash cam footage I have and post it ...
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Old Oct 1, 2020 | 10:24 AM
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I would assume that torque limits were set to make the transmission last. I can see a cpc tune on face lift cars but I would stay away from a tcu tune.

our transmission is the same as the old 6.2 and those clutches start slipping around 575 to 600whp but that car does not make the torque our cars make when tuned.
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Old Oct 1, 2020 | 10:37 AM
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Originally Posted by skratch77
I would assume that torque limits were set to make the transmission last. I can see a cpc tune on face lift cars but I would stay away from a tcu tune.

our transmission is the same as the old 6.2 and those clutches start slipping around 575 to 600whp but that car does not make the torque our cars make when tuned.
Yeah, well too late on the TCU tune lol.

I have noticed a few times if I try to lug a tall gear through lower RPM in manual mode that it wants to slip... needless to say, that won't be done any more. Concerning, but also happy because it must be making significantly more power! (not having dyno'd the car before and after)

Also, the transmission in the 2020 is not the same as the last gen 6.2 car....
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Old Oct 1, 2020 | 10:37 AM
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Originally Posted by skratch77
I would assume that torque limits were set to make the transmission last. I can see a cpc tune on face lift cars but I would stay away from a tcu tune.

our transmission is the same as the old 6.2 and those clutches start slipping around 575 to 600whp but that car does not make the torque our cars make when tuned.
Agreed.. that is what I have been trying to get my head around, as too , what is the real world benefit, and how to make that investment justifiable, other then just to "say I have it" ...

I def dont want to know what a bill would be like to get into clutch replacements, and transmission services from this...

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Old Oct 1, 2020 | 10:40 AM
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Originally Posted by EB_C63
Y Concerning, but also happy because it must be making significantly more power! (not having dyno'd the car before and after)
Its not that your car is MAKING more power from a TCU tune, because its NOT... , its that the systems in placed to reduce the waste push to the wheels (the TCU) has been modified to allow it to ignore its 'limits"

Definitely do not confuse the issue that you are getting wheel spin, and clutch slippage with thinking the TCU created more power, TCU does not change power created.. just allowing it to goto the rear end..
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Old Oct 1, 2020 | 10:41 AM
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Originally Posted by FLC63s
Its not that your car is MAKING more power from a TCU tune, because its NOT... , its that the systems in placed to reduce the waste push to the wheels (the TCU) has been modified to allow it to ignore its 'limits"

Definitely do not confuse the issue that you are getting wheel spin, and clutch slippage with thinking the TCU created more power, TCU does not change power created.. just allowing it to goto the rear end..
Well aware of how it works boss
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Old Oct 1, 2020 | 10:43 AM
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Originally Posted by EB_C63
Well aware of how it works boss
cool man :-) was just clarify for others as well.. since lots of others read these post and use them for decision making.
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Old Oct 1, 2020 | 10:45 AM
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Originally Posted by FLC63s
cool man :-) was just clarify for others as well.. since lots of others read these post and use them for decision making.
Do you know what to expect from a good intake after already having the DP's, tunes, etc?

Will it help significantly in the upper RPM range?
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