Renntech transmission upgrade needed?
Thread Starter
Junior Member
Joined: Nov 2016
Posts: 40
Likes: 3
From: OC, CA
2016 Mercedes Benz GLE63S
Renntech transmission upgrade needed?
Hey guys I'm pretty new to this forum as a member so I'll lay it all out pretty straightforward. I have a 16' GLE63s 4matic currently on a Renntech tune, downpipes, and BMC filters. I've done before and after dyno runs and attached both of em. I've also used a Vbox Sport to get specific when it comes to numbers. 0-100kph 4.07 seconds and 1/4 mile I ran 12.06 @183.8kph. Now I am very pleased with my results from Renntech so I am aiming for an m157 stage II and bigger intercooler/pump upgrade. They have repeatedly claimed that the stock transmission does not require any mechanical upgrades to enforce that much torque on the new upgrades however I am a little worried. Has anyone tried their 722.9 transmission upgrade? Does it really help with shift times and lower rpm acceleration? If anyone wants to ask why I'm doing this to a 2.5 ton suv? Just for the fun of it..
Junior Member
Joined: Sep 2016
Posts: 37
Likes: 6
From: Mercer Island
ML63 AMG BiTurbo
The love here can be a bit slow at times... I get your question, I too get a lot of why bother just drive it stock, but its a twin turbo V8 SUV, who doesn't want to make it go faster and for the cost of a tune - BOOM!
Anyhow, no idea on the transmission tune, interested to know how you get on. I found my transmission seems to be getting a little clunky (that said its getting colder now too), I'm going to put the stock ECU back in tonight see how it goes, no expecting to see a difference.
Anyhow, no idea on the transmission tune, interested to know how you get on. I found my transmission seems to be getting a little clunky (that said its getting colder now too), I'm going to put the stock ECU back in tonight see how it goes, no expecting to see a difference.
Thread Starter
Junior Member
Joined: Nov 2016
Posts: 40
Likes: 3
From: OC, CA
2016 Mercedes Benz GLE63S
Yea I feel you about that love though lol.. Renntech has a 722.9 transmission upgrade and so do weistec. I'm thinking about Renntech stage II so I'm probably going to look into their uograde����
Junior Member
Joined: Sep 2016
Posts: 37
Likes: 6
From: Mercer Island
ML63 AMG BiTurbo
Are you actually having problem with transmission or is precaution to potential future problems?
I was also advised by various tuners that no modifications were required to the Gearbox to handle an ECU Tune, it was only when we started to look at bigger turbos etc that transmission modifications may be required.
I was also advised by various tuners that no modifications were required to the Gearbox to handle an ECU Tune, it was only when we started to look at bigger turbos etc that transmission modifications may be required.
Thread Starter
Junior Member
Joined: Nov 2016
Posts: 40
Likes: 3
From: OC, CA
2016 Mercedes Benz GLE63S
Are you actually having problem with transmission or is precaution to potential future problems?
I was also advised by various tuners that no modifications were required to the Gearbox to handle an ECU Tune, it was only when we started to look at bigger turbos etc that transmission modifications may be required.
I was also advised by various tuners that no modifications were required to the Gearbox to handle an ECU Tune, it was only when we started to look at bigger turbos etc that transmission modifications may be required.
Trending Topics
MBWorld Fanatic!
Joined: Nov 2002
Posts: 2,895
Likes: 53
From: Maryland
'14 E63S & '14 Audi SQ5
http://www.caranddriver.com/reviews/...ic-test-review
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
Thread Starter
Junior Member
Joined: Nov 2016
Posts: 40
Likes: 3
From: OC, CA
2016 Mercedes Benz GLE63S
The acceleration numbers seem close to stock numbers run by Car & Driver. What were the weather conditions and altitude when you ran?
http://www.caranddriver.com/reviews/...ic-test-review
http://www.caranddriver.com/reviews/...ic-test-review
Thread Starter
Junior Member
Joined: Nov 2016
Posts: 40
Likes: 3
From: OC, CA
2016 Mercedes Benz GLE63S
MBWorld Fanatic!
Joined: Nov 2002
Posts: 2,895
Likes: 53
From: Maryland
'14 E63S & '14 Audi SQ5
I also have a vbox and do my own testing of my vehicles. Are you using the raw vbox acceleration data without regard to any "roll-out"? If you are not using roll-out, that would knock a couple of tenths off the times to compare to magazine data. But the 1/4 mile trap speed still seems fairly low for what I would expect from downpipes and tune.
Thread Starter
Junior Member
Joined: Nov 2016
Posts: 40
Likes: 3
From: OC, CA
2016 Mercedes Benz GLE63S
I don't know if the C&D numbers are exaggerated or not, but MB usually lists some pretty conservative 0-60 mph times (probably a function of MB not using any roll-out in attaining the times).
I also have a vbox and do my own testing of my vehicles. Are you using the raw vbox acceleration data without regard to any "roll-out"? If you are not using roll-out, that would knock a couple of tenths off the times to compare to magazine data. But the 1/4 mile trap speed still seems fairly low for what I would expect from downpipes and tune.
I also have a vbox and do my own testing of my vehicles. Are you using the raw vbox acceleration data without regard to any "roll-out"? If you are not using roll-out, that would knock a couple of tenths off the times to compare to magazine data. But the 1/4 mile trap speed still seems fairly low for what I would expect from downpipes and tune.
Super Member
Joined: Apr 2002
Posts: 981
Likes: 9
From: Switzerland
Mercedes Evo II
On my w166 ml63 I have 680hp and about 1'050 Nm of torque which is limited ...
I was told by my tuner and brabus confirmed the info that below that power/torque no problem for the stock transmission...
Above upgrade is vital...
I was told by my tuner and brabus confirmed the info that below that power/torque no problem for the stock transmission...
Above upgrade is vital...
Super Member
Joined: Jul 2003
Posts: 963
Likes: 122
From: Illinois
2014 Mercedes-Benz GL63 AMG
I've seen W166 and X166 run torque above 708 lb-ft and be fine. Long-term, only time will tell.
For daily driver and long-term reliability, I don't think any tuner has bigger R&D and deeper pockets than Brabus. Their techs limit the torque to 708 lb-ft of torque for a daily driver, to be driven all day at high speeds and be reliable.
Can you push more, I'm sure - but anything more, personally I'd do the Weistec bulletproof transmission upgrade that is good for up to 1,000 lb-ft of torque.
"Both tuning versions produce 960 Nm (708 lb-ft) of torque from a low 2,000 rpm. Peak torque was limited electronically to protect the drivetrain."
http://www.autoblog.com/2013/08/21/b...00-horsepower/
For daily driver and long-term reliability, I don't think any tuner has bigger R&D and deeper pockets than Brabus. Their techs limit the torque to 708 lb-ft of torque for a daily driver, to be driven all day at high speeds and be reliable.
Can you push more, I'm sure - but anything more, personally I'd do the Weistec bulletproof transmission upgrade that is good for up to 1,000 lb-ft of torque.
"Both tuning versions produce 960 Nm (708 lb-ft) of torque from a low 2,000 rpm. Peak torque was limited electronically to protect the drivetrain."
http://www.autoblog.com/2013/08/21/b...00-horsepower/
Thread Starter
Junior Member
Joined: Nov 2016
Posts: 40
Likes: 3
From: OC, CA
2016 Mercedes Benz GLE63S
yea figured with that much torque and it being my daily I went through with it lol had it shipped to RT Florida.
Thread Starter
Junior Member
Joined: Nov 2016
Posts: 40
Likes: 3
From: OC, CA
2016 Mercedes Benz GLE63S
I've seen W166 and X166 run torque above 708 lb-ft and be fine. Long-term, only time will tell.
For daily driver and long-term reliability, I don't think any tuner has bigger R&D and deeper pockets than Brabus. Their techs limit the torque to 708 lb-ft of torque for a daily driver, to be driven all day at high speeds and be reliable.
Can you push more, I'm sure - but anything more, personally I'd do the Weistec bulletproof transmission upgrade that is good for up to 1,000 lb-ft of torque.
"Both tuning versions produce 960 Nm (708 lb-ft) of torque from a low 2,000 rpm. Peak torque was limited electronically to protect the drivetrain."
http://www.autoblog.com/2013/08/21/b...00-horsepower/
For daily driver and long-term reliability, I don't think any tuner has bigger R&D and deeper pockets than Brabus. Their techs limit the torque to 708 lb-ft of torque for a daily driver, to be driven all day at high speeds and be reliable.
Can you push more, I'm sure - but anything more, personally I'd do the Weistec bulletproof transmission upgrade that is good for up to 1,000 lb-ft of torque.
"Both tuning versions produce 960 Nm (708 lb-ft) of torque from a low 2,000 rpm. Peak torque was limited electronically to protect the drivetrain."
http://www.autoblog.com/2013/08/21/b...00-horsepower/
