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    • VTT N54 GC Lite 2.0 hybrid turbo Flex Fuel vs. pump gas numbers - ACN91, ACN91 vs E70, E70 only, E85 non-flex tuned vs E70 flex-fuel

      We bought a car from a customer and sold to another customer. He asked us to retune it for flex-fuel, and just get it tweaked so it's running its best. This is a car we did a lot of work to over the years so we know it well.



      The Car made close to 500/500 on ACN91 octane only (again ended up bouncing around E17-E18 after draining the tank), and close to 650/670 on E70.

      Mods include:
      Stock motor
      Stock head
      VTT GC Lites
      VTT aluminum outlet
      VTT Stock location inlets
      VTT Single Barrel Shotgun
      PFS Stock Series Double-shot bucketed
      Spec Twin Disc
      Catless downpipes
      HPF 3.5" Exhaust
      VTT Charge pipe/Raceport BOV
      VRSF 7.5" Race intercooler

      Dynos are attached for ACN91 only, ACN91 vs E70, E70 only, Old E85 non-flex tune/dyno vs E70 now.

      The GC Lites are pretty much maxed here WGDC goes 100% up top, but power is not falling off too bad. The single barrel is having no issues keeping up at these power levels with the new HPFP tables, and look how smooth the LPFP signal, and rail pressure signal is. None of the crazy spikes we were seeing with the Helix. This is a solid streetable set up, that makes for a VERY fast car. Spool is obscene with 500WTQ by almost 2700RPM & 600WTQ by almost 3000. Rocketship!

      ACN91:


      ACN91 vs. E70:


      E70:


      Old E85 non-flex tune/dyno vs E70 now:


      This article was originally published in forum thread: More GC Lite/ Flex Fuel numbers 486/493 91OCT - 644/671 E70 started by Chris@VargasTurboTech View original post
      Comments 7 Comments
      1. Sticky's Avatar
        Sticky -
        Just a pic of GC Lite 2.0 to accompany article:

        Click here to enlarge
      1. maxnix's Avatar
        maxnix -
        Impressive to get 500/500 on ACN 91 Octane.
      1. blaster3500's Avatar
        blaster3500 -
        Nice results! Any logs?
      1. Chris@VargasTurboTech's Avatar
        Chris@VargasTurboTech -
        Attachment 60097Attachment 60098

        For those paying attention to the logs, you can see trims are maxed; this was a scalar adjustment. AFR was fine, once the scalar was adjusted trims were fine.
      1. blaster3500's Avatar
        blaster3500 -
        Click here to enlarge Originally Posted by Chris@VargasTurboTech Click here to enlarge
        Attachment 60097Attachment 60098

        For those paying attention to the logs, you can see trims are maxed; this was a scalar adjustment. AFR was fine, once the scalar was adjusted trims were fine.
        Thanks for sharing! Rail pressures look great.
      1. Carl Morris's Avatar
        Carl Morris -
        Click here to enlarge Originally Posted by maxnix Click here to enlarge
        Impressive to get 500/500 on ACN 91 Octane.
        Yeah, that car went 500 with catless downpipes, mine with almost the exact same setup except stock DPs went 460 on the same dyno only a couple of weeks before. Good data on downpipes IMO if the boost was the same.
      1. martymil's Avatar
        martymil -
        E85 is great but 91 or 93 with a little e is perfect for a street car, not everybody has access to e85 in most countries so I'm very happy to see manufactures doing 91 testing to show how much a customer could get out of their turbos.

        Everybody is hung up of having the biggest numbers but in reality most havent got the dollars to go that far.

        Good work VTT