Close

    • Porsche 991.1 Turbo S before and after BMS JB4 tune Dynojet results - 614 awhp, 700 lb-ft awtq

      BMS is spreading the JB4 love to many platforms including Porsche. Their 991.1 Turbo S development car is on the 100% factory tune. That means there is no flash software tuning involved at all here and all you are seeing is the before and after result of the JB4 piggyback.


      The car is not stock on the baseline but on the stock software:

      Quote Originally Posted by BMS
      Mods are the BMS intake, BMS chargepipe, Exhaust, BMS CPI, and of course the JB4 for tuning. The ECU on this vehicle is 100% factory and never been reflashed.

      Baseline testing was done on 91 octane with CPI disabled, and then Payam cranked it up by adding in some E40 fuel and turning on CPI.
      If you are wondering why the gains are so large the E40 with CPI (charge pipe injection) is bumping octane considerably:


      Just massive gains and topping 700 lb-ft of torque at the wheels is a gain of over 175 lb-ft of torque at all four wheels over the stock tune.

      Great results for a car still on the factory turbochargers.

      This article was originally published in forum thread: Porsche 991.1 Turbo before and after BMS JB4 tune Dynojet results - 614 awhp, 700 lb-ft awtq started by Sticky View original post
      Comments 7 Comments
      1. Payam@BMS's Avatar
        Payam@BMS -
        Thanks to Weistec as well for letting me come down there to use their AWD dynojet. Great people always helping out.

        PS, my car is a Turbo "S" Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Payam@BMS Click here to enlarge
        PS, my car is a Turbo "S"
        I didn't know that.

        Only makes a difference for the stock output Click here to enlarge
      1. Bowser330's Avatar
        Bowser330 -
        When are the pure turbos going on Payam's Turbo S ? 700whp !
      1. Payam@BMS's Avatar
        Payam@BMS -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I didn't know that.

        Only makes a difference for the stock output Click here to enlarge
        It's a 40k option actually from Turbo to the S. Standard for S models are sports chrono package, centerlocks (I'm happy I don't have them), Ceramic brakes, etc.
      1. Payam@BMS's Avatar
        Payam@BMS -
        Click here to enlarge Originally Posted by Bowser330 Click here to enlarge
        When are the pure turbos going on Payam's Turbo S ? 700whp !
        I want 800whp, I think I'll have ACF build me a TT setup with twin G25 660s. Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Payam@BMS Click here to enlarge
        It's a 40k option actually from Turbo to the S. Standard for S models are sports chrono package, centerlocks (I'm happy I don't have them), Ceramic brakes, etc.
        For the purpose of power they both have the same sized turbos.

        Only the 991.2 Turbo S gets larger VTG units.
      1. Payam@BMS's Avatar
        Payam@BMS -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        For the purpose of power they both have the same sized turbos.

        Only the 991.2 Turbo S gets larger VTG units.
        Correct. The 991.2 Turbo and Turbo S Differ from larger turbos and bigger fueling headroom.
        For the .2 it's a no brainer to get the S. I had a great deal I couldn't pass up with this car Click here to enlarge