Max torque on 7-speed SPEEDSHIFT MCT
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2020 E63 AMG-S, 2021 GLE53 Coupe
Max torque on 7-speed SPEEDSHIFT MCT
Does anyone knows what is the max torque rating on the 7-speed SPEEDSHIFT MCT? I'm thinking of getting RENNtech's ECU upgrade and 839 lb-ft sounds like a lot 
. They do not mention anything about upgrading the transmission while getting this tune. Any input will be appreciated.
. They do not mention anything about upgrading the transmission while getting this tune. Any input will be appreciated.
Last edited by GIdriver; Nov 30, 2014 at 07:09 PM.
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2019 E63 S
Does anyone knows what is the max torque rating on the 7-speed SPEEDSHIFT MCT? I'm thinking of getting RENNtech's ECU upgrade and 839 lb-ft sounds like a lot . They do not mention anything about upgrading the transmission while getting this tune. Any input will be appreciated.
. They do not mention anything about upgrading the transmission while getting this tune. Any input will be appreciated.Renntech does as well for the 2012-13 RWD cars http://www.renntechmercedes.com/www/node/524 although I believe that Vasily is running one in Russia on his 2014 AWD E63 with turbo upgrade and all Renntech mods.
Last edited by sdg1871; Nov 30, 2014 at 10:41 PM.
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2020 E63 AMG-S, 2021 GLE53 Coupe
I have read but cannot confirm that the MCT is good until about 1000 lbs-ft. From my discussions with tuners, a MCT upgrade is not necessary if going with tune and bolt on mods but should be seriously considered if you are doing a turbo upgrade. Weistec offers such an upgrade. http://weistec.com/all/e/e-63/2014-p...ssion-awd.html
Renntech does as well for the 2012-13 RWD cars http://www.renntechmercedes.com/www/node/524 although I believe that Vasily is running one in Russia on his 2014 AWD E63 with turbo upgrade and all Renntech mods.
Renntech does as well for the 2012-13 RWD cars http://www.renntechmercedes.com/www/node/524 although I believe that Vasily is running one in Russia on his 2014 AWD E63 with turbo upgrade and all Renntech mods.
Thanks for the information. I'm probably going to stay away from modifications such as turbo upgrades. Most likely do "just" tuning, rear muffler and/or down pipes.
On a side note, Vasily's car is dope!!
Thanks again!!
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2019 E63 S
That's why I went Renntech full tune and Renntech sport mufflers. For me I think 716 BHP and 859 lbs-Ft are more than adequate. If somehow the sound isn't enough for me I can always add the catted down pipes (would never go catless).
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Mercedes Evo II
I have read but cannot confirm that the MCT is good until about 1000 lbs-ft. From my discussions with tuners, a MCT upgrade is not necessary if going with tune and bolt on mods but should be seriously considered if you are doing a turbo upgrade. Weistec offers such an upgrade. http://weistec.com/all/e/e-63/2014-p...ssion-awd.html
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2014 E63 S model
I can tell you from experience, its nowhere near 1000 lb ft. You won't notice the clutch is slipping under normal driving or even acceleration in lower gears but if hold you a high gear in manual mode the MCT will show its true colors. There is a reason they don't use it in the S 65
https://youtu.be/7t97fJ6drdA
https://youtu.be/7t97fJ6drdA
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2014 E63s amg 4matic, 2009 C63, 2006 E55 AMG , 2001.5 AUDI S4 stg 3+ w/meth
I can tell you from experience, its nowhere near 1000 lb ft. You won't notice the clutch is slipping under normal driving or even acceleration in lower gears but if hold you a high gear in manual mode the MCT will show its true colors. There is a reason they don't use it in the S 65
https://youtu.be/7t97fJ6drdA
https://youtu.be/7t97fJ6drdA
and fyi, they do use the 722.9 MCT in the s65 since 2015
Last edited by gaspam; Mar 3, 2016 at 03:13 PM.
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2006 BMW M5 Sedan SMG III, 2014 Mercedes-Benz E 63 S AMG V8 BiTurbo 4Matic Sedan
Anyone know the power transfer efficiency gain from them going from regular 7G Tronic to MCT SpeedShift version? I am guessing the wet clutch packs transfer more power/torque, less lost to friction, versus the torque converter?
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From: miami / delray beach
2014 E63s amg 4matic, 2009 C63, 2006 E55 AMG , 2001.5 AUDI S4 stg 3+ w/meth
one caveat however, For wet clutch MCT, is it requires control system to control the clutch engagement and disengagement. This require transmission control calibration accurately because this will affect the vehicle driveability and performance.... so really all the improved efficiency of the MCT could be negated if the TCU calibration isnt great
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
havent seen any concrete numbers but The clutch pack is smaller in diameter and lighter than a torque converter. according to Mercedes, mct wet clutch has 60 percent less rotating inertia than the torque converter that was previously in the 7G tronic. That should make the powertrain more responsive, which, theoretically, should translate into better performance. The reduced inertia allowed the engineers to quicken shift speed by 20 percent
one caveat however, For wet clutch MCT, is it requires control system to control the clutch engagement and disengagement. This require transmission control calibration accurately because this will affect the vehicle driveability and performance.... so really all the improved efficiency of the MCT could be negated if the TCU calibration isnt great
one caveat however, For wet clutch MCT, is it requires control system to control the clutch engagement and disengagement. This require transmission control calibration accurately because this will affect the vehicle driveability and performance.... so really all the improved efficiency of the MCT could be negated if the TCU calibration isnt great
Out Of Control!!
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
Isn't it relative to short term vs long term lifespan of drivetrain?
Most people spending brabus money probably don't keep their car long enough to care about post-2 year reliability ... But for someone (like the e55 driver buying a 13 year old e55) I doubt the mct can reliably handle all that power long term
Just my $0.02, interesting discussion
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2014 E63s amg 4matic, 2009 C63, 2006 E55 AMG , 2001.5 AUDI S4 stg 3+ w/meth
the sedan is powered by a biturbo, 6.0-liter, V-8 engine that received a displacement increase from the standard 5.5-liter found in V-8-powered AMGs. While the increase can be rated as significant, the power bump is plain staggering, with no less than 850 horsepower and 848 pound-feet of torque being pushed to the wheels. The engine is actually capable of delivering 1,069 pound-feet, but Brabus says it had to limit torque to prevent the drivetrain from enduring too much stress.
Last edited by gaspam; Mar 7, 2016 at 06:19 PM.
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Isn't it relative to short term vs long term lifespan of drivetrain?
Most people spending brabus money probably don't keep their car long enough to care about post-2 year reliability ... But for someone (like the e55 driver buying a 13 year old e55) I doubt the mct can reliably handle all that power long term
Just my $0.02, interesting discussion
Isn't it relative to short term vs long term lifespan of drivetrain?
Most people spending brabus money probably don't keep their car long enough to care about post-2 year reliability ... But for someone (like the e55 driver buying a 13 year old e55) I doubt the mct can reliably handle all that power long term
Just my $0.02, interesting discussion
And, brabus provides 3 year warranty on cars bought directly from them or modified after left the dealer with possibility to extend it yearly ( Russia )
Last edited by dav461; Mar 4, 2016 at 12:49 PM.
Out Of Control!!
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
Warranties don't guarantee problem free driving, but i trust you, problem free at 850lb-ft or less
