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    • Project 991.2 Update - Making 911 GT2 RS 3.8 power in a 2017 991.2 3.0 Carrera on 91 octane pump gas - BoostAddict Stage 1 991.2 3.0 Turbo Upgrade

      As you know the PorscheBoost 991.2 Project Carrera is at Gintani for installation of the full Tial Sport product suite as well as testing of the three main aftermarket manifold/header options. Well, Gintani decided to further refine their tune before changing the hardware.


      As a reminder, the car features the BoostAddict Stage 1 package which includes Tial M660 turbochargers with custom Gintani tuning and Fabspeed bypass pipes.

      Here is an overlay of where we are over where we were which was 540 rwhp:


      Those gains are with just with software changes alone.

      What does the car look like at 31 psi on 91 octane compared to the stock tune baseline?


      Yes, massive gains. We are at 600 rwhp currently. What does a 991.2 GT2 RS make on a Mustang dyno? Roughly 595-605 rwhp stock:


      Keep in mind we have yet to touch the intercoolers, headers, inlets, or go to race fuel.

      Just 91 octane pump fuel and meth injection for now.

      Yes, this is the world's most powerful 991.2 Carrera and we are nowhere near finished.

      #project991

      This article was originally published in forum thread: Project 991.2 Update - Making 911 GT2 RS 3.8 power in a 2017 991.2 3.0 Carrera on 91 octane pump gas - BoostAddict Stage 1 991.2 3.0 Turbo Upgrade started by Sticky View original post
      Comments 7 Comments
      1. Payam@BMS's Avatar
        Payam@BMS -
        You're crazy for doing this on 91, even with methanol that's still scary AF. Looks good man, this thing should be much faster than my turbo S.
      1. quattr0's Avatar
        quattr0 -
        He would have plenty of time to prepare for next meet. I'm stoked for you gents. Just bought wifey a Q3 so I'm going to chill for awhile.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Payam@BMS Click here to enlarge
        You're crazy for doing this on 91, even with methanol that's still scary AF. Looks good man, this thing should be much faster than my turbo S.
        100% meth though so not a 50/50 blend with 91.

        Alex will start pushing things on race gas once we install the new hardware.

        Definitely going to be a quick car though. Trying to get a run with a GT2 RS to really put it in perspective...
      1. 3DMetal's Avatar
        3DMetal -
        Amazing results ! Insane power !! Looks like your making more power and tq earlier with the 3.0TT TiAL M660 than the GT2 RS. Can you get better overlays ?

        Your stock inter coolers at this flow and pressure are estimated to be about 7-8 psi of back pressure, not to mention the IATs Click here to enlarge
        The Stock inlets are also a significant pressure drop at the compressor inlet.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by 3DMetal Click here to enlarge
        ooks like your making more power and tq earlier with the 3.0TT TiAL M660 than the GT2 RS. Can you get better overlays ?
        Gintani has a GT2 RS coming in for a full set of upgrades so I should be able to do direct overlays at that time.

        Click here to enlarge Originally Posted by 3DMetal Click here to enlarge
        Your stock inter coolers at this flow and pressure are estimated to be about 7-8 psi of back pressure, not to mention the IATs
        The Stock inlets are also a significant pressure drop at the compressor inlet.
        Bingo Click here to enlarge
      1. 135idct's Avatar
        135idct -
        gt2rs turbo swap, possible?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by 135idct Click here to enlarge
        gt2rs turbo swap, possible?
        Maybe but would require a lot of work as the car isn't designed for those turbos. Why even bother when the Tial Hybrids are cheaper and making the same power? Plus they do not require any redesign. OEM fitment.