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    • CTS Turbos designing 4.0 TFSI EA824 V8 single scroll turbo manifolds with GTX2867 and GTX3071 turbo fitment

      The top mount twin turbo Audi 4.0 EA824 V8 features a twin scroll turbo manifold design. If you do not know what a twin scroll turbocharger design does or how it works click here but the idea is for the turbocharger to get extra exhaust pulses in one housing.


      CTS Turbos is designing their single scroll manifolds for the 4.0 TFSI V8. The idea obviously is to go for maximum power at the sacrifice of some spool and response.

      In theory this should also allow some additional turbocharger choices.

      For now though, this is theory as CTS Turbos does not have a working example of their manifolds with the Garrett CHRA combos mentioned:

      Quote Originally Posted by CTS Turbo
      CTS Turbo preliminary design work has been completed on these Audi RS7/RS6/S7/S6 4.0T turbo upgrades. These are completely redesigned turbofolds, for fitment with Gtx2867 and Gtx3071 chras. These have been CFD optimized with completely redesigned volutes, enlarged compressor housings, enlarged manifold runners and converted to single scroll for maximum power output. We will be test fitting these in the coming weeks along with our downpipes, and intakes. These will be cast in stainless and include inconel 718 hardware.
      Certainly something to watch and hopefully an update on the progress comes soon.

      This article was originally published in forum thread: CTS Turbos designing 4.0 TFSI EA824 V8 single scroll turbo manifolds with GTX2867 and GTX3071 turbo fitment started by Sticky View original post
      Comments 1 Comment
      1. BM3TUNING's Avatar
        BM3TUNING -
        Great job! CTS