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Ditto on anyone with experience with this. I did this for years with my hot-rod 427 2000 Camaro SS, but the sideline issues that come with it got aggravating. Stroked 427 with 640 HP naturally aspirated.
And, I’m sure this “tuning” also, magically upgrades the suspension & brakes to properly handle all this extra power, right?
The car is already designed for that given that this will be roughly the peak power output of the SL63e, at least the suspension/brakes.
My only concern would be the transmission handling the extra torque. That said, anybody tuning their cars pays to play. There is always a risk of a big bill but safety should not be impacted...
Personally me waiting for Renntech, should be out soon, all my cars has been tuned with them, 20-G63, 18-E63, 22-Gle63, not a single issue, and pretty soon 22-SL63
Personally me waiting for Renntech, should be out soon, all my cars has been tuned with them, 20-G63, 18-E63, 22-Gle63, not a single issue, and pretty soon 22-SL63
Totally agree, some MB dealers even do the Renntech installs. I have a 55 so I wouldn't mind getting it up to 63 level with a tune considering it's the same engine...
Personally me waiting for Renntech, should be out soon, all my cars has been tuned with them, 20-G63, 18-E63, 22-Gle63, not a single issue, and pretty soon 22-SL63
Did you ever get the SL63 tuned? Looking to tune my SL with their RPM module
Yeah but Renntech wants you to buy the tune from the 55 to get to the 63 hp and its the same exact engine.. and then they can bump you to the 720 hp for just another 3800 its laughable and stealing right at your face..
Yeah but Renntech wants you to buy the tune from the 55 to get to the 63 hp and its the same exact engine.. and then they can bump you to the 720 hp for just another 3800 its laughable and stealing right at your face..
I’m not sure if that’s an available option. Regardless, that would still be a tremendous value. I would have bought the 55 if that was the case.
Yeah but Renntech wants you to buy the tune from the 55 to get to the 63 hp and its the same exact engine.. and then they can bump you to the 720 hp for just another 3800 its laughable and stealing right at your face..
Sounds more like wishful thinking to me. For one it is questionable that the engine is the same. I expect different turbos at minimum. The only ECU upgrade that Renntech offers gives you less than 100HP increase which tells me that this is what they can squeeze out of this with the available hardware. You can't stack one tune on top of one another
so if u plan to tune then SL55 is a better option?
In case of Renntech, the tune adds less than 100hp to either model. I has to be understood that a tuned SL55 is still not the same as a stock SL63.
According to RT, the 63 is still stronger as they use their own dyno numbers and show the stock 63 as 625hp and the tuned 55 at 579hp.
As for tuning, it has to be understood that in case of engine issues MB can void the warranty and it will take a lot of work and force to get any money out of a tuner, no matter what they promise.
MB is more lax than BMW when it comes to tunes but I know of a couple E63s cars that were blacklisted. Pay to play...
In general though, the SL55 feels like its offering more bang for the buck, in terms of value, not performance.
In case of Renntech, the tune adds less than 100hp to either model. I has to be understood that a tuned SL55 is still not the same as a stock SL63.
According to RT, the 63 is still stronger as they use their own dyno numbers and show the stock 63 as 625hp and the tuned 55 at 579hp.
As for tuning, it has to be understood that in case of engine issues MB can void the warranty and it will take a lot of work and force to get any money out of a tuner, no matter what they promise.
MB is more lax than BMW when it comes to tunes but I know of a couple E63s cars that were blacklisted. Pay to play...
In general though, the SL55 feels like its offering more bang for the buck, in terms of value, not performance.
Here from MB Engineer after I asked the question... Both the 55 and 63 trim levels are powered by AMG’s 4.0-liter, twin-turbocharged V8.The 63 gets some additional boost pressure and goosed software to deliver the additional oomph.
So its like BMW and their M cars and M Competition models..
Last edited by amgeater2; Jul 14, 2023 at 11:52 AM.
I'm sensitive to the tuning voiding the warranty too, but understand that a Houston MB Dealer does Renntech installs so I wonder if that helps any.
I am actually more interested in an exhaust upgrade since the 63 is pretty fast as is: any input on a new exhaust creating a warranty issue?
Here from MB Engineer after I asked the question... Both the 55 and 63 trim levels are powered by AMG’s 4.0-liter, twin-turbocharged V8.The 63 gets some additional boost pressure and goosed software to deliver the additional oomph.
So its like BMW and their M cars and M Competition models..
That would be a pretty lame answer for an engineer and incorrect. We know that Renntech can't get to 600hp tuning the SL55 but over 700HP on the SL63. If this were to be mechanically the same engine, this literally wouldn't be the case and the 55 should make the same HP tuned as the 63.
So there will be some hardware differences just like in many of the other 4.0 liter AMG engines.
I'm sensitive to the tuning voiding the warranty too, but understand that a Houston MB Dealer does Renntech installs so I wonder if that helps any.
I am actually more interested in an exhaust upgrade since the 63 is pretty fast as is: any input on a new exhaust creating a warranty issue?
If the dealer installs it or not, with an engine failure the logs will be dumped to AMG and the claim will be denied if tuned. BMW is more hardcore and does these log checks (which will show any tune, piggyback or not) in their decision making.
That means Renntech is up for the claim if they guarantee it. Be curious if they would really pay.
Exhausts should be no issue IMO. The manufacturer can only cancel coverage on the affected item and that is pulled. I would keep the original exhaust/cats in case of resale (lower value and emissions compliance).
That would be a pretty lame answer for an engineer and incorrect. We know that Renntech can't get to 600hp tuning the SL55 but over 700HP on the SL63. If this were to be mechanically the same engine, this literally wouldn't be the case and the 55 should make the same HP tuned as the 63.
So there will be some hardware differences just like in many of the other 4.0 liter AMG engines.
So you have no backup to your comment and/or an educate answer.. and you called my comment which is coming from an Engineer from the dealer Lame... ? as a moderator you need to be a bit more constructive and open to conversation(s) rather than border line insulting..
Last edited by amgeater2; Jul 14, 2023 at 03:25 PM.
I'm sensitive to the tuning voiding the warranty too, but understand that a Houston MB Dealer does Renntech installs so I wonder if that helps any.
I am actually more interested in an exhaust upgrade since the 63 is pretty fast as is: any input on a new exhaust creating a warranty issue?
I doubt it but time will tell when we all start doing mods..
So you have no backup to your comment and/or an educate answer.. and you called my comment which is coming from an Engineer from the dealer Lame... ? as a moderator you need to be a bit more constructive and open to conversation(s) rather than border line insulting..
This is a curious remark. I literally backed my comment with information from Renntech that cannot take a tuned SL55 to the power of the SL63 in stock form. If both engines were mechanically identical then the ECU tune should equalize them.
Here is their Renntech's data, based on dyno results.
SL55 Stock Dyno measured by RENNtech (peak): 489 HP @ 4,900rpm; 582 LB-FT @ 3,400rpm
SL55 Tuned - Rated by RENNtech (peak @crank): 579 HP @ 5,050rpm; 664 LB-FT @ 3,350rpm
SL63 Stock Dyno measured by RENNtech (peak): 625 HP | 681 LB-FT
SL63 Tuned - Rated by RENNtech (peak @crank): 721 HP | 748 LB-FT
Opposite, you just quoted some MB engineer (or was it just a tech at the dealer) providing a quote that should not come out of an engineers mouth. No specifics whatsoever but with some goosed up software. Why don't you help the forum in contacting said engineer and ask him to provide specific details?
Unfortunately there has been very little information about the M177 engines in the AMG SL.
But it has been surprising that all engine outputs for the SL are below what these engines deliver in other cars. Even the SL43 is well below the power output of the engine in the CLA45.
The SL55 power is actually surprisingly similar to the non-AMG version of the same engine (M176). This is the standard Mercedes V8, which also was originally developed by AMG. These use single scroll turbos. So looking at the old W222 S560 S-Class, here is a comparison.
The only reason why I use Renntech numbers is that their dyno numbers provide for some consistency across models, along with stock figures.
S560:
Rated by Mercedes-Benz: 463 HP @ 5,250-6,000rpm; 516 LB-FT @ 2,000-4,000rpm
Dyno measured by RENNtech: 484 HP @ 5,600rpm; 538 LB-FT @ 4,750rpm
SL55:
Rated by Mercedes-Benz (avg.): 469 HP @ 5,500-6,250rpm; 516 LB-FT @ 2,250-4,500rpm
Dyno measured by RENNtech (peak): 489 HP @ 4,900rpm; 582 LB-FT @ 3,400rpm
Both engines even seem to tune to roughly the same power output.
Like others, I am eager to discover the exact specs of this particular engine and if for some reason, power is throttled perhaps for things like emissions reporting where MB is paying heavy penalties in Germany.
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