What's the deal with the TCU on these cars?
Senior Member
Joined: Mar 2016
Posts: 341
Likes: 55
2014 E63 S model
UPDATE--- just confirmed from weistec, the TCU valve body mod does not change the torque limits... response below :
Altering the torque limits in the TCU is something that we only do when we do a full in house build of an AWD 722.9 transmission. We do not do it on just the tcu/valvebody upgrade
Altering the torque limits in the TCU is something that we only do when we do a full in house build of an AWD 722.9 transmission. We do not do it on just the tcu/valvebody upgrade
MBWorld Fanatic!
Joined: Feb 2011
Posts: 2,841
Likes: 202
From: miami / delray beach
2014 E63s amg 4matic, 2009 C63, 2006 E55 AMG , 2001.5 AUDI S4 stg 3+ w/meth
since you are doing their transmission upgrade i assume its because you are doing turbo upgrade too? post dyno runs when you get them as would love to see them
MBWorld Fanatic!
Joined: Jun 2006
Posts: 6,649
Likes: 207
'03 E55, Range Rover Sport Supercharged, Ducati 748R
I'm going to play devil's advocate on Weistec's claim about increasing torque limits and call bs...but I hope I'm wrong. If they could do this, why limit it to just their highest tune? They could corner the market on every level tune since no one else claims to be able to do this yet and it's such a limiting factor on launching these cars.
Thread Starter
Super Member
Joined: Jun 2012
Posts: 959
Likes: 36
From: Maryland
W212 E63 AMG S Model
I'm going to play devil's advocate on Weistec's claim about increasing torque limits and call bs...but I hope I'm wrong. If they could do this, why limit it to just their highest tune? They could corner the market on every level tune since no one else claims to be able to do this yet and it's such a limiting factor on launching these cars.
MBWorld Fanatic!
Joined: Feb 2011
Posts: 2,841
Likes: 202
From: miami / delray beach
2014 E63s amg 4matic, 2009 C63, 2006 E55 AMG , 2001.5 AUDI S4 stg 3+ w/meth
renntech also has a 10.6 @137 in cls63
just speculation, but i think what weistec is saying is that if they raise the torque limits on any m157 car ,that has power levels beyond what we are seeing on tune/downpipe, the transmission wont hold up long, so they leave the limits MB has in there in place for any mod on the M157 that is not accompanied by a transmission build or custom build... they probably dont want to deal with a bunch of us getting tunes and blowing our tranny
over on benz boost a few members discussed something similar to where the turbo mods werent worth much until after about +100mph as then the torque limits seem disappear and the upgraded turbo'd cars would pull away from the tuned/downpiped cars..... vasily said that was the case with him when he was on his renntech VIP turbo ugrade vs another car that was just tune/downpipe.. they were pretty even until triple digits and then he pulled away easily
it wasnt until he got his transmission built, that he started putting down monster numbers
I am assuming this is what was happening before built tranmission with torque limits raised
Last edited by gaspam; Mar 11, 2016 at 10:50 AM.
Senior Member
Joined: May 2016
Posts: 254
Likes: 42
E63 amg s
I have hooked the TQ app to my car and we don't see full boost in first gear we see 9lbs in first gear and the second it shifts into second it instantly go up to 14.5-15lbs and stays there for the rest of the run.
MB World Stories
The Best of Mercedes & AMG
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
Senior Member
Joined: Jan 2014
Posts: 251
Likes: 48
From: Kalispell, MT
2016 E63 S AMG
I actually just ordered the Scantool OBD II Bluetooth a couple of days ago. It will be here tomorrow. I'm eager to get some data on TQ Pro when it arrives. After reading this entire thread, which I had never seen before, I still maintain that the solution for which everyone is awaiting is Speedriven's stand-alone ECU. I spoke to Marcin in person for a couple of hours when I was in the Chicago area a couple of weeks ago and he showed me what they have already done with this on the V12's. This will be THE solution for the M157 when it is available next spring. He also explained how incredibly easy it was to data log and tune on the fly with this ECU. He did express concerns that driveline components will become the limiting factors, particularly with the AWD cars. I would have happily gone with Speedriven for the work I had done at AMS, but Speedriven does not offer the intercooler upgrade nor intake that AMS makes. Because the intake requires an extra ECU modification, I wanted to deal directly with the folks that developed the tune for those parts. With that said, Marcin really knows his business. If I had a V12, which seems to be his specialty at this time (he had about a half dozen in his shop at the same time getting full internal builds), I would go Speedriven. He does all the engine builds personally and, unlike AMS, work almost exclusively on Benz's.
Last edited by BerndV; Sep 8, 2016 at 11:09 AM.
Former Vendor of MBWorld
iTrader: (1)
Joined: May 2008
Posts: 12,139
Likes: 295
From: Houston
2003 W211 E55, 2003 W220 S600
MBWorld Fanatic!
Joined: May 2016
Posts: 1,370
Likes: 40
CLS63 AMG
Is the TCU torque limit still there for the 2016 e63s?
i heard the 2016 model got a transmission update, but don't know if this has anything to do with the initial torque limit/hesitation lag this car is has.
i heard the 2016 model got a transmission update, but don't know if this has anything to do with the initial torque limit/hesitation lag this car is has.
Out Of Control!!
Joined: Jun 2004
Posts: 13,799
Likes: 3,229
2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
torque limits exist so the 600 of torque in first gear doesn't shred up the transmission
the trans updates apparently only addressed shifting and wet clutch behavior
Senior Member
Joined: Mar 2016
Posts: 341
Likes: 55
2014 E63 S model
i was told the same and heard same elsewhere also.... weistec did say they increase the torque limits, that the ecu imposes, when they do a bulletproof transmission build
since you are doing their transmission upgrade i assume its because you are doing turbo upgrade too? post dyno runs when you get them as would love to see them
since you are doing their transmission upgrade i assume its because you are doing turbo upgrade too? post dyno runs when you get them as would love to see them
When everything was put together I was told the engine needed a rebuild with only 5000 miles on the motor. I don't believe the parts were responsible for this but thats a whole other can of worms. I will post a more detailed thread when I have time.
I have shipped my car to Gad motors in Germany. They will let me know if boring the cylinders will get rid of the gouges. If it does I will have a 5.8L motor. They will check the weistec transmission and let me know if it can hold the torque. This transmission has no miles on it. If not they will recommend that I do another tranny upgrade. They will also test the Powerhaus turbos to see if they can feed enough air to the 5.8L. Should be a good test of what a stock housing turbo can do with upgraded turbine and compressor wheel.
The weistec exhaust does not fit in my car because of quality control issue. I know if another person in Edmonton who had the exact same problem with his weistec exhaust. They wont take it back so will need to bend it somehow. I will probably post my whole story when I have time, in a separate thread, hopefully with some dyno numbers and 1/4 times.
Last edited by e65; Nov 18, 2016 at 01:36 PM.
Super Member
Joined: Nov 2015
Posts: 773
Likes: 44
C300
5th gear was slipping. Thats why I sent transmission to Weistec. I had W.3 turbos that I sent to Powerhaus for turbine wheel upgrade. I also ordered weistec exhaust.
When everything was put together I was told the engine needed a rebuild with only 5000 miles on the motor. I don't believe the parts were responsible for this but thats a whole other can of worms. I will post a more detailed thread when I have time.
I have shipped my car to Gad motors in Germany. They will let me know if boring the cylinders will get rid of the gouges. If it does I will have a 5.8L motor. They will check the weistec transmission and let me know if it can hold the torque. This transmission has no miles on it. If not they will recommend that I do another tranny upgrade. They will also test the Powerhaus turbos to see if they can feed enough air to the 5.8L. Should be a good test of what a stock housing turbo can do with upgraded turbine and compressor wheel.
The weistec exhaust does not fit in my car because of quality control issue. I know if another person in Edmonton who had the exact same problem with his weistec exhaust. They wont take it back so will need to bend it somehow. I will probably post my whole story when I have time, in a separate thread, hopefully with some dyno numbers and 1/4 times.
When everything was put together I was told the engine needed a rebuild with only 5000 miles on the motor. I don't believe the parts were responsible for this but thats a whole other can of worms. I will post a more detailed thread when I have time.
I have shipped my car to Gad motors in Germany. They will let me know if boring the cylinders will get rid of the gouges. If it does I will have a 5.8L motor. They will check the weistec transmission and let me know if it can hold the torque. This transmission has no miles on it. If not they will recommend that I do another tranny upgrade. They will also test the Powerhaus turbos to see if they can feed enough air to the 5.8L. Should be a good test of what a stock housing turbo can do with upgraded turbine and compressor wheel.
The weistec exhaust does not fit in my car because of quality control issue. I know if another person in Edmonton who had the exact same problem with his weistec exhaust. They wont take it back so will need to bend it somehow. I will probably post my whole story when I have time, in a separate thread, hopefully with some dyno numbers and 1/4 times.
Senior Member
Joined: Jan 2013
Posts: 381
Likes: 18
From: Colorado
2014 Mercedes E63S AMG
All I can add is that I got a tune from a certain company and my car shifted just like stock and was pulling timing like crazy.
Then I sent my ecu to eurocharged and it's no longer pulling timing, pulls way harder, and shifts very hard and authoritive.
I emailed eurocharged about the way it shifted, and they advised that they removed all the torque limits. So maybe they cracked it, idk.
Then I sent my ecu to eurocharged and it's no longer pulling timing, pulls way harder, and shifts very hard and authoritive.
I emailed eurocharged about the way it shifted, and they advised that they removed all the torque limits. So maybe they cracked it, idk.
Thread Starter
Super Member
Joined: Jun 2012
Posts: 959
Likes: 36
From: Maryland
W212 E63 AMG S Model
All I can add is that I got a tune from a certain company and my car shifted just like stock and was pulling timing like crazy.
Then I sent my ecu to eurocharged and it's no longer pulling timing, pulls way harder, and shifts very hard and authoritive.
I emailed eurocharged about the way it shifted, and they advised that they removed all the torque limits. So maybe they cracked it, idk.
Then I sent my ecu to eurocharged and it's no longer pulling timing, pulls way harder, and shifts very hard and authoritive.
I emailed eurocharged about the way it shifted, and they advised that they removed all the torque limits. So maybe they cracked it, idk.
what year is your car?
Senior Member
Joined: Mar 2016
Posts: 341
Likes: 55
2014 E63 S model
I'm happy your weistec exhaust fit your car and I don't pretend that every single one of them will not fit. But if you put $6,000 into one of them and it didn't fit your car and you had no recourse you would be like me very unhappy. Maybe you would feel conned and cheated.
for a lot of people out there they will never know that their weistec exhauste did not fit properly because the installer would rather force them to line up with the silencers than to drop the motor again and remove the defective exhaust. In my case even that was not possible. And even if it was possible it's bad practice all that force to line up the pipes with mufflers transfers on to the turbos.
at the end of the day there is absolutely no excuse for weistec to be selling me something like this. There is no justification period. this lack of quality control is absolutely unacceptable. If I wanted to deal with something like this I could have found a company in China to Fab something up for me
Last edited by e65; Nov 20, 2016 at 02:32 PM.
Super Member
Joined: Nov 2015
Posts: 773
Likes: 44
C300
When you get a Turbo upgrade you expecting to be adding an extra 200 horsepower, and you're willing to pay big bucks for that. The w.3 doesnt add anything over stock turbo. False advertising and waste of money. I can understand why people who purchase these are in denial I was myself. You just don't want to accept that you blew tens of thousands of dollars for no benefit. (weistec w.3 upgrade e63 with full exhaust/boltons vs stock turbo m5)
https://youtu.be/RE4sIaGrDTA
I'm happy your weistec exhaust fit your car and I don't pretend that every single one of them will not fit. But if you put $6,000 into one of them and it didn't fit your car and you had no recourse you would be like me very unhappy. Maybe you would feel conned and cheated.
for a lot of people out there they will never know that their weistec exhauste did not fit properly because the installer would rather force them to line up with the silencers than to drop the motor again and remove the defective exhaust. In my case even that was not possible. And even if it was possible it's bad practice all that force to line up the pipes with mufflers transfers on to the turbos.
at the end of the day there is absolutely no excuse for weistec to be selling me something like this. There is no justification period. this lack of quality control is absolutely unacceptable. If I wanted to deal with something like this I could have found a company in China to Fab something up for me
https://youtu.be/RE4sIaGrDTA
I'm happy your weistec exhaust fit your car and I don't pretend that every single one of them will not fit. But if you put $6,000 into one of them and it didn't fit your car and you had no recourse you would be like me very unhappy. Maybe you would feel conned and cheated.
for a lot of people out there they will never know that their weistec exhauste did not fit properly because the installer would rather force them to line up with the silencers than to drop the motor again and remove the defective exhaust. In my case even that was not possible. And even if it was possible it's bad practice all that force to line up the pipes with mufflers transfers on to the turbos.
at the end of the day there is absolutely no excuse for weistec to be selling me something like this. There is no justification period. this lack of quality control is absolutely unacceptable. If I wanted to deal with something like this I could have found a company in China to Fab something up for me
Super Member
Joined: Nov 2015
Posts: 773
Likes: 44
C300
When you get a Turbo upgrade you expecting to be adding an extra 200 horsepower, and you're willing to pay big bucks for that. The w.3 doesnt add anything over stock turbo. False advertising and waste of money. I can understand why people who purchase these are in denial I was myself. You just don't want to accept that you blew tens of thousands of dollars for no benefit. (weistec w.3 upgrade e63 with full exhaust/boltons vs stock turbo m5)
https://youtu.be/RE4sIaGrDTA
https://youtu.be/RE4sIaGrDTA
MBWorld Fanatic!
Joined: May 2016
Posts: 1,370
Likes: 40
CLS63 AMG
All I can add is that I got a tune from a certain company and my car shifted just like stock and was pulling timing like crazy.
Then I sent my ecu to eurocharged and it's no longer pulling timing, pulls way harder, and shifts very hard and authoritive.
I emailed eurocharged about the way it shifted, and they advised that they removed all the torque limits. So maybe they cracked it, idk.
Then I sent my ecu to eurocharged and it's no longer pulling timing, pulls way harder, and shifts very hard and authoritive.
I emailed eurocharged about the way it shifted, and they advised that they removed all the torque limits. So maybe they cracked it, idk.
can anyone confirm what this guy is saying is true?
