• Weistec 63 AMG bi-turbo M157 V8 tune and downpipe Dynojet dyno results for 91 and 93 octane pump gas - 684 wheel horsepower

      Very nice results here from Weistec engineering for their M157 twin turbo 5.5 liter V8 tune along with their M157 downpipe upgrade on a stock turbo M157 on both 91 octane and 93 octane pump fuel. The tune alone on 91 octane pump gas was previously shown as providing 618 wheel horsepower on a Dynojet. The addition of the Weistec downpipes combined with the ECU tune raises this output on 91 octane to 647 wheel horsepower in SAE correction.

      That clearly shows the downpipes making a very nice difference. Torque figures rise from 667 pound-feet at the wheels to 766.19 with the downpipes. That is not a typo, that is a gain of almost exactly 100 pound-feet at the wheels. Very, very impressive.

      The 93 octane pump gas figure shows a peak of 684 wheel horsepower for the tune and downpipes. The torque figure is basically the same as the 91 octane figure with a peak of 765 pound-feet at the wheels. The 93 octane fuel making a difference as rev climb past 4250 rpm allowing more peak horsepower. Below that RPM the torque is the exact same as on 91 octane.

      Dyno graph and video below, great work by Weistec showing off the quality of their downpipe solution for the M157.



      This article was originally published in forum thread: Weistec 63 AMG bi-turbo M157 V8 tune and downpipe Dynojet dyno results for 91 and 93 octane pump gas - 684 wheel horsepower started by Sticky View original post
      Comments 5 Comments
      1. BK63AMG's Avatar
        BK63AMG -
        These numbers are just obscene.
      1. DefactoM6's Avatar
        DefactoM6 -
        Wow.
      1. MisterEm's Avatar
        MisterEm -
        Muy bien Weistec.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by BK63AMG Click here to enlarge
        These numbers are just obscene.
        This motor will be seeing huge numbers relatively quickly. I mean it already is.
      1. LostMarine's Avatar
        LostMarine -
        what a beast!