• First performance numbers for new CLS 63 AMG with M157 twin turbo V8 - 12.1@121.5

      Autoweek recently tested the new CLS 63 AMG. We have been waiting to see numbers out of this motor and now we have something to go on: 12.1@121.5. Now, it is important to note this was achieved with their test equipment. This most likely means something like a VBOX which inflates trap speeds. However, the test was done at 4000 feet elevation which will have an effect even on turbo motors. This was also the standard version without the performance package which ups power to around 550 horsepower. What this means is these cars will run 11's out of the box and the performance package will likely be trapping over 125 mph. With a tune... well, things are going to get very interesting indeed.






      This article was originally published in forum thread: 5.5 V8 in cls w/out power boost goes 12.1 @ 121.5 @ 4000ft elevation started by DD GT3 RD View original post
      Comments 14 Comments
      1. GT3's Avatar
        GT3 -
        Nice. Is that the same engine we should see in the up coming CLK black series?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by GT3 Click here to enlarge
        Nice. Is that the same engine we should see in the up coming CLK black series?
        You mean C-coupe black series?
      1. GT3's Avatar
        GT3 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        You mean C-coupe black series?
        Yeah, that.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by GT3 Click here to enlarge
        Yeah, that.
        If it gets this motor and weighs 400-500 pounds less, wow. With a tune 130 trap speeds...
      1. DD GT3 RD's Avatar
        DD GT3 RD -
        pretty cool they sell offer a tune (performance pack) that offers an extra 32hp and 74 trq...obviously aftermarket will offer much better for less....still cool thou
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by DD GT3 RD Click here to enlarge
        pretty cool they sell offer a tune (performance pack) that offers an extra 32hp and 74 trq...obviously aftermarket will offer much better for less....still cool thou
        The point is basically to take a chunk out of the aftermarket for themselves. You know how old guys are with their obsession with "warranty" and so forth, many will opt for it.
      1. Exeenom's Avatar
        Exeenom -
        Very impressive results.... I predict 11.8 in good elevation/weather and maybe 11.4 at MIR type weather Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Exeenom Click here to enlarge
        Very impressive results.... I predict 11.8 in good elevation/weather and maybe 11.4 at MIR type weather Click here to enlarge
        With the performance pack I think mid to low 11's may be realistic.
      1. Barfly's Avatar
        Barfly -
        Just don't expect much room on the table after the PP or aftermarket tune, the turbos are small just like on previous TT applications. MB/AMG won't let the pony (63) outrun the horse (65).
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Barfly Click here to enlarge
        Just don't expect much room on the table after the PP or aftermarket tune, the turbos are small just like on previous TT applications. MB/AMG won't let the pony (63) outrun the horse (65).
        The main question is if the turbos are cast into the manifold.
      1. Barfly's Avatar
        Barfly -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        The main question is if the turbos are cast into the manifold.
        Yes. Turbos are limited to 1.0 bar without PP and 1.4 bar with PP.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Barfly Click here to enlarge
        Yes. Turbos are limited to 1.0 bar without PP and 1.4 bar with PP.
        Ugh, they are? Not this again. Well, it is going to be a nice long while before we see serious turbo upgrades and considering nothing can be done with the OEM manifold it will not be cheap.
      1. oddjob2021's Avatar
        oddjob2021 -
        unless the oem mani has a good enough flow layout that an upgraded probably equal length mani would be only for those looking for extreme power. just like on the n54, the stock mani isnt that bad, and comapnies just swap chra's. maybe the same can be done for this engine, would be nice to have twin BB ceramic chra's instead of the stock cast water/oil cooled wheels/chra.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by oddjob2021 Click here to enlarge
        unless the oem mani has a good enough flow layout that an upgraded probably equal length mani would be only for those looking for extreme power. just like on the n54, the stock mani isnt that bad, and comapnies just swap chra's. maybe the same can be done for this engine, would be nice to have twin BB ceramic chra's instead of the stock cast water/oil cooled wheels/chra.
        With this motor it shouldn't be as big of a problem as with the V12. It has been years and nobody has aftermarket manifolds available for turbo swaps but that motor is limited on space.

        I expect this engine to have a far more aggressive aftermarket.