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    • AMG V8 showdown, M156 (M159) versus M157 - CLS63 AMG with PP-Performance Stage 2 tune races an SLS AMG with full exhaust

      We are going to be seeing many more M156 versus M157 comparisons as more and more owners of both of these motors modify them. This is a great race but obviously the M159 (based on the M156) V8 in the SLS AMG is at a power disadvantage versus the factory twin turbo M157 motor. The SLS holds off the CLS 63 AMG early on thanks in part to its quick shifting transmission but eventually the power of the ecu tuned CLS 63 AMG shows up top and it walks away. The SLS only has a full Supersprint exhaust so it does quite well considering the horsepower and torque disparity. If the SLS had some boost as well, say from a Weistec supercharger, the result would likely be quite different and in the favor the SLS.



      This article was originally published in forum thread: AMG V8 showdown, M156 (M159) versus M157 - CLS63 AMG with PP-Performance Stage 2 tune races an SLS AMG with full exhaust started by Sticky View original post
      Comments 30 Comments
      1. M3_WC's Avatar
        M3_WC -
        Just posted this short roll race in the "vs" section. Maybe should have put it in the "M157" section.

        http://www.benzboost.com/showthread....-vs-2012-CLS63
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by M3_WC Click here to enlarge
        Just posted this short roll race in the "vs" section. Maybe should have put it in the "M157" section.

        http://www.benzboost.com/showthread....-vs-2012-CLS63
        If it is MB versus MB or includes one of our vendors I would prefer for it to go in a related engine section then. No worries, I'll move it. The M157 scene is heating up.
      1. hworang00's Avatar
        hworang00 -
        Damn...those are both crazy cars, but that CLS is insane haha...nice
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by hworang00 Click here to enlarge
        Damn...those are both crazy cars, but that CLS is insane haha...nice
        Once you hit stupid high speeds, yep.
      1. AMGSR's Avatar
        AMGSR -
        Nice runs.

        Since the SLS only had exhaust, I'm surprised that tuned CLS63 TT didn't walk it harder. Took a long time for the CLS to get around the SLS.

        SLS traps about 120 in 1/4 miles whereas a tuned CLS should trap 125 - 127. If fact, I think a tuned CLS Biturbo has trapped over 131.

        Like to see a PP tuned CLS make a pass at a drag strip so we can get some real data.
      1. AMGSR's Avatar
        AMGSR -
        Video of SLS at drag strip. Trapping 120




        http://youtu.be/ImAhzk8um1w
      1. Yukohama's Avatar
        Yukohama -
        wow that is ridiculous how the cls pulled up top like that
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by AMGSR Click here to enlarge
        Video of SLS at drag strip. Trapping 120


        http://youtu.be/ImAhzk8um1w
        Helping you:



        Very few views for that video seems it wasn't posted before. Think I might put it on the front page.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Yukohama Click here to enlarge
        wow that is ridiculous how the cls pulled up top like that
        Not really, took it a long time to do so and the SLS was ahead until they got to very, very high speeds.
      1. SLS AMG's Avatar
        SLS AMG -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        We are going to be seeing many more M156 versus M157 comparisons as more and more owners of both of these motors modify them. This is a great race but obviously the M159 (based on the M156) V8 in the SLS AMG is at a power disadvantage versus the factory twin turbo M157 motor. The SLS holds off the CLS 63 AMG early on thanks in part to its quick shifting transmission but eventually the power of the ecu tuned CLS 63 AMG shows up top and it walks away. The SLS only has a full Supersprint exhaust so it does quite well considering the horsepower and torque disparity. If the SLS had some boost as well, say from a Weistec supercharger, the result would likely be quite different and in the favor the SLS.
        You are absolutely correct. A weistec supercharger in combination with the supersprint longtubes for an SLS is a GAME OVER against any AMG car.

        the one Weistec worked on in Europe in conjuction with Kleeman (a video is posted in the M156 forum) made 722rwhp and 850 Nmwtq. Talk about a bullet :-)


        I think the SLS in the video above kept up prettty good
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by SLS AMG Click here to enlarge
        You are absolutely correct.
        Thanks, I'm used to it Click here to enlarge Just kidding.

        Click here to enlarge Originally Posted by SLS AMG Click here to enlarge
        I think the SLS in the video above kept up prettty good
        Same here, it was actually ahead at real world speeds.
      1. SLS AMG's Avatar
        SLS AMG -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Thanks, I'm used to it Click here to enlarge Just kidding.



        Same here, it was actually ahead at real world speeds.

        Exactly. the lighter weight helps acceleration. The video of the SLS posted above tapping 120mph is a stock car. an SLS with a tune + headers would make more no doubt.

        Lighter car is greater for acceleration, but torque and HP play a big role at the top end
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by SLS AMG Click here to enlarge
        Lighter car is greater for acceleration, but torque and HP play a big role at the top end
        Exactly why terminal velocity is about HP and not weight.
      1. 0-60Motorsports's Avatar
        0-60Motorsports -
        Awesome Vid and race. Loved it.
      1. blkclk550's Avatar
        blkclk550 -
        WOW CLS63 IS JUST A MONSTER!
      1. flipm3's Avatar
        flipm3 -
        Wow...these cars are just ridiculously fast! I would love to see that same SLS with the PP Performance tune run against the same tuned CLS! Make it happen Sticky Click here to enlarge
      1. SLS AMG's Avatar
        SLS AMG -
        Click here to enlarge Originally Posted by flipm3 Click here to enlarge
        Wow...these cars are just ridiculously fast! I would love to see that same SLS with the PP Performance tune run against the same tuned CLS! Make it happen Sticky Click here to enlarge
        The SLS already has the PP-Perfromance tune. I think sticky forgot to mention it in the article. It has Software+ Headers+ Xpipe.


        This is how Power outpreforms weight :-)
      1. saeedg48's Avatar
        saeedg48 -
        nice kill!
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by SLS AMG Click here to enlarge
        The SLS already has the PP-Perfromance tune. I think sticky forgot to mention it in the article. It has Software+ Headers+ Xpipe.


        This is how Power outpreforms weight :-)
        I was unaware it had software, didn't see that in the vid.
      1. Yukohama's Avatar
        Yukohama -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Not really, took it a long time to do so and the SLS was ahead until they got to very, very high speeds.
        i wonder what speeds they hit, but yes the SLS was ahead at speeds a sane person would be driving at Click here to enlarge