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    • D4 Audi S8 pickiing up 158 whp, 158 wtq with United Motorsport Stage 1 ECU tune + 500 rpm higher redline with ADM TCU tune

      The Audi S8 is incredibly potent and really underrated in the performance sphere. The 4.0 TFSI motor offers larger turbos than the S6/S7 although they are slightly down in performance compared to the RS6/RS67 a tune still unlocks massive gains.


      Seriously, massive gains on 93 octane pump fuel:


      The United Motorsport Stage I ECU tune is picking up 158 all wheel horsepower and 158 lb-ft of torque at the wheels on a Mustang dyno. Thanks to the ADM (Addict Motorsport) TCU tune the car revs out another 500 rpm while making big power.

      Shift times are said to decrease from .56 seconds to .34 seconds with the TCU tune but no proof of that is provided. It is likely true though making for a huge improvement over stock.

      What a beast of a car and the A8 4.0 TFSI's are an even greater tuning value.

      This article was originally published in forum thread: D4 Audi S8 pickiing up 158 whp, 158 wtq with United Motorsport Stage 1 ECU tune + 500 rpm higher redline with ADM TCU tune started by Sticky View original post
      Comments 7 Comments
      1. nbrigdan's Avatar
        nbrigdan -
        tune stil
        Those really are massive. Probably nearly 200 whp on a dynojet.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by nbrigdan Click here to enlarge
        Those really are massive. Probably nearly 200 whp on a dynojet.
        I'm surprised you missed the other errors...
      1. crapinternet's Avatar
        crapinternet -
        Yeah I think I want the APR version of this for my S8.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by crapinternet Click here to enlarge
        Yeah I think I want the APR version of this for my S8.
        I'm surprised you haven't tuned it yet. You're sitting on a beast.
      1. crapinternet's Avatar
        crapinternet -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I'm surprised you haven't tuned it yet. You're sitting on a beast.
        it's out of warranty too, so seriously WTF am I waiting for.
      1. Sticky2's Avatar
        Sticky2 -
        Click here to enlarge Originally Posted by crapinternet Click here to enlarge
        it's out of warranty too, so seriously WTF am I waiting for.
        I don’t know. Talk to @Arin@APR
      1. Arin@APR's Avatar
        Arin@APR -
        Let's do this!