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    • Renntech tuned SLS Black Series M159 V8 with Renntech headers hits 562 wheel horsepower

      Nice results here from a Mercedes SLS AMG Black Series whose 6.2 liter M159 V8 received Renntech headers and a custom dyno tune. The result? On a Dynojet in STD correction a peak of 562 wheel horsepower was hit. This is 37 wheel horsepower over the baseline of 525 wheel horsepower. In SAE correction on the Dynojet the peak figures change to 547 wheel horsepower for a gain of 34 wheel horsepower over the 513 wheel horsepower baseline.

      Those are some very nice gains from a motor AMG pushes pretty far past the standard SLS AMG which itself features a more highly strung version of the M156 V8 seen in 63 AMG models known as the M159. Especially considering the Renntech headers still retain cats. 562 naturally aspirated horsepower is incredibly impressive in of itself as is squeezing more power out of the over 100 horsepower per liter M159 Black Series motor.

      Dynographs and a video of the Black Series that will provides eargasms below.






      This article was originally published in forum thread: 2014 RENNtech SLS Black Series M159 enjoy! started by m54b25 View original post
      Comments 44 Comments
      1. SLS AMG's Avatar
        SLS AMG -
        Click here to enlarge Originally Posted by LZH Click here to enlarge
        Please explain how someone can tune fixed ratio gears ?? LOL
        By relocating and positioning the gears with a matching software in the valve body. Because without the software and applying the correct pressure release, nothing can be done. I'm sure @JRCART and @Sticky understood what I meant.

        I cant really say the same about a moron who thought the MCT wasnt a 722.9, LOL:
        http://www.benzboost.com/showthread....=weistec+stage
      1. LZH's Avatar
        LZH -
        Click here to enlarge Originally Posted by SLS AMG Click here to enlarge
        By relocating and positioning the gears with a matching software in the valve body. Because without the software and applying the correct pressure release, nothing can be done. I'm sure @JRCART and @Sticky understood what I meant.

        I cant really say the same about a moron who thought the MCT wasnt a 722.9, LOL:
        http://www.benzboost.com/showthread....=weistec+stage
        You said a tune, you didn't mention anything else. And you make ZERO sense in the above statement. How exactly do you relocate a gearset ? And how would that change the final drive ratio???? That is what you said could be accomplished with a simple tune. All you've done is explain how to increase line pressure in the valve body which does NOT change the final drive ratio whatsoever.

        Seems to me like the only moron here is you considering the fact that you didn't even know the SLS BS has a shorter final drive ratio than the regular SLS. Click here to enlarge
      1. SLS AMG's Avatar
        SLS AMG -
        Click here to enlarge Originally Posted by LZH Click here to enlarge

        Seems to me like the only moron here is you considering the fact that you didn't even know the SLS BS has a shorter final drive ratio than the regular SLS. Click here to enlarge
        My posts #20 & #17 confirm that I do. Everything I said was correct. its too bad that you cant see it, but then again this is the person who thinks he is making 500rwhp with his pump tune CLK BS, lolClick here to enlarge

        just stop posting , really , you look like an idiot!
      1. LZH's Avatar
        LZH -
        Click here to enlarge Originally Posted by SLS AMG Click here to enlarge
        My posts #20 & #17 confirm that I do. Everything I said was correct. its too bad that you cant see it, but then again this is the person who thinks he is making 500rwhp with his pump tune CLK BS, lolClick here to enlarge

        just stop posting , really , you look like an idiot!
        Your posts #17 and #20 prove you to be an uninformed idiot. You said you wondered why he couldn't break 200mph in his SLS BS. @Sticky then informed you the SLS BS had a shorter final drive ratio and you said, "That's true". LOL, how the hell does that prove anything other than you lack of knowledge on the subject ??

        So why don't you stick to the subject and explain to us all how you change the final drive ratio of a car with just a tune ??? You can't, because the only way to change the gear ratio is to change the GEARS you $#@!ing moron.
      1. bigb00st's Avatar
        bigb00st -
        I think you guys need a time out or to put each other on ignore!!
      1. SLS AMG's Avatar
        SLS AMG -
        Click here to enlarge Originally Posted by LZH Click here to enlarge
        Your posts #17 and #20 prove you to be an uninformed idiot. You said you wondered why he couldn't break 200mph in his SLS BS. @Sticky then informed you the SLS BS had a shorter final drive ratio and you said, "That's true". LOL, how the hell does that prove anything other than you lack of knowledge on the subject ??

        So why don't you stick to the subject and explain to us all how you change the final drive ratio of a car with just a tune ??? You can't, because the only way to change the gear ratio is to change the GEARS you $#@!ing moron.
        AHAHAAHHAHAH

        And your going to do that without a tune?

        Keep displaying what an ultimate idiot you are to everybodyClick here to enlarge

        You need to also change the positioning of the gears in the tranny when changing the drive ratio, that's a basic in transmission assembly.

        What a clown LOL
      1. LZH's Avatar
        LZH -
        Why do you keep sidestepping the question? Tell us all how you change gear ratios with a tune, because that's what YOU said.
        You don't need a "tune" to change gear ratios you fool.
      1. cturbos's Avatar
        cturbos -
        By swapping the ratios you're defeating the purpose of the B/S,it's not meant to be 200MPH car!!
        P.S
        LZH,it was done and still being done to the cls55 when installing the SLR trans TCU,retuning it to accept the new(stock) ratios of the CLS55.hope this helps
      1. SLS AMG's Avatar
        SLS AMG -
        Click here to enlarge Originally Posted by cturbos Click here to enlarge
        By swapping the ratios you're defeating the purpose of the B/S,it's not meant to be 200MPH car!!
        P.S
        LZH,it was done and still being done to the cls55 when installing the SLR trans TCU,retuning it to accept the new(stock) ratios of the CLS55.hope this helps
        +63
        now here is someone that understands AMG transmissions
      1. LZH's Avatar
        LZH -
        Click here to enlarge Originally Posted by cturbos Click here to enlarge
        By swapping the ratios you're defeating the purpose of the B/S,it's not meant to be 200MPH car!!
        Exactly

        Click here to enlarge Originally Posted by cturbos Click here to enlarge
        P.S
        LZH,it was done and still being done to the cls55 when installing the SLR trans TCU,retuning it to accept the new(stock) ratios of the CLS55.hope this helps
        I'm aware of this mod, however that is far from just a "tune" as SLS first suggested nor does it change the final drive ratio. Not to mention no one has done it to the Getrag DCT in the SLS and comparing that transmission to the old 5 speed 722.6 is hardly and apples to apples comparison. But since all @SLS AMG has ever done is roll on racing I can understand how he would suggest something as stupid as changing the gearing on the SLS BS simply for bragging rights of going over 200mph.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by bigb00st Click here to enlarge
        I think you guys need a time out or to put each other on ignore!!
        I think you're right. It's time to start removing people from threads.
      1. RNS-11Z's Avatar
        RNS-11Z -
        Click here to enlarge Originally Posted by SLS AMG Click here to enlarge
        I went 340 km/hr ~ 210mph with mine...Not sure why you cant with yours since you have the BS? can you tune your tranny for higher ratio to pick up more speed up top?
        I am still trying to understand how you can tune your tranny for higher ratio as you said? Unless you mean adjusting shifting parameters and rev limit, how in the hell can you change the gearing ratio in the box with a tune?? Is there spare components in the box that allow you to adjust the ratio? Please explain? Thanks
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by RNS-11Z Click here to enlarge
        I am still trying to understand how you can tune your tranny for higher ratio as you said? Unless you mean adjusting shifting parameters and rev limit, how in the hell can you change the gearing ratio in the box with a tune?? Is there spare components in the box that allow you to adjust the ratio? Please explain? Thanks
        As we all know you obviously can't change a fixed mechanical component's design with software.

        To change the gearing you need to change the gears. You can't relocate, reposition, or whatever, the physical gear needs to be changed. Then you may need to do software changes although when I changed the final drive in my M3 no software change was necessary. On an E46 M3 a software change is necessary when changing the final drive for the automatic shift modes in the SMG (not the manual modes and I don't why a manual car would need a software change) as they are based on MPH and not RPM.
      1. LZH's Avatar
        LZH -
        Click here to enlarge Originally Posted by RNS-11Z Click here to enlarge
        I am still trying to understand how you can tune your tranny for higher ratio as you said? Unless you mean adjusting shifting parameters and rev limit, how in the hell can you change the gearing ratio in the box with a tune?? Is there spare components in the box that allow you to adjust the ratio? Please explain? Thanks
        Don't bother trying to understand something that makes no sense whatsoever. As @Sticky said, you cannot change the physical gears with software.
      1. LZH's Avatar
        LZH -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        As we all know you obviously can't change a fixed mechanical component's design with software.
        Seems there is one person here who doesn't know that.

        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        To change the gearing you need to change the gears. You can't relocate, reposition, or whatever, the physical gear needs to be changed. Then you may need to do software changes although when I changed the final drive in my M3 no software change was necessary. On an E46 M3 a software change is necessary when changing the final drive for the automatic shift modes in the SMG (not the manual modes and I don't why a manual car would need a software change) as they are based on MPH and not RPM.
        +63
        now here is someone that understands AMG transmissions

        Click here to enlarge
      1. LZH's Avatar
        LZH -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I think you're right. It's time to start removing people from threads.
        I think he's right, too. And while you are at it, make sure you go back and read post #22 where I was called a "moron" for asking a question...NICELY. And apparently, based on your post #34 , a very valid question since you've agreed with everything I've said. Or, are you in the business of perpetuating misinformation that is technically incorrect ?
        Once again, Joesph....address the problem and not those who respond to it.
      1. SLS AMG's Avatar
        SLS AMG -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        As we all know you obviously can't change a fixed mechanical component's design with software.
        i never said software changes a fixed mechanical component in the tranny. I stated when changing the gear ratio you need to have a recognized software in the TCU

        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Then you may need to do software changes although when I changed the final drive in my M3 no software change was necessary. On an E46 M3 a software change is necessary when changing the final drive for the automatic shift.
        Isnt that what I was saying??? A software tune is needed for the new drive ratio!
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by SLS AMG Click here to enlarge
        Isnt that what I was saying??? A software tune is needed for the new drive ratio!
        Well you wrote can't you tune the tranny for a higher ratio implying changing the ratio with software which is impossible. All you can do is raise the redline really for more MPH but what one really needs to do is a physical gear change.

        As stated, you don't necessarily need a new software tune as I doubt the AMG software is designed to shift at a MPH versus at an RPM point as that would mean changing rims/tires would be enough to change the final drive and the shift points.

        So, you likely do not need software but I mentioned the E46 m3 because it is completely application dependent and I can give countering examples. For the most part though, you don't need to tune for a final drive change.
      1. SLS AMG's Avatar
        SLS AMG -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Well you wrote can't you tune the tranny for a higher ratio implying changing the ratio with software which is impossible.
        No I didn't and I mentioned that in a later post. I implied a software is needed for changing the drive ratio.

        Please check your PM
      1. LZH's Avatar
        LZH -
        Click here to enlarge Originally Posted by SLS AMG Click here to enlarge
        No I didn't and I mentioned that in a later post. I implied a software is needed for changing the drive ratio.

        Please check your PM
        Um, yeah...you did.

        Click here to enlarge Originally Posted by SLS AMG Click here to enlarge
        I went 340 km/hr ~ 210mph with mine...Not sure why you cant with yours since you have the BS? can you tune your tranny for higher ratio to pick up more speed up top?
        If you had asked. "Can you tune your tranny for more top end speed" then that might have made sense. But you mentioned the word "RATIO", which makes no sense whatsoever.