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    • Apex Speed Tech tuning the Singer Porsche motor on an engine dyno + Why engine dynos are important

      Many of you probably do not know yet that Apex Speed Technology does the tuning for the Singer Porsches. We'll let Apex tell you the story in their own words:

      Last week Tim and I went to Cosworth in Torrance, CA to setup and being tuning on the Singer Vehicle Design Porsche 911 motor, using Pectel Engine Management. It was a great project, and we got to work with a lot of really smart people. These days chassis dynos are so common people seem to forget the value of a proper engine dyno. Last week was a good reminder.



      Chassis dynos have always been much better tuning tools than they are for fine power measurement. I find it entertaining when people make evaluations based on small changes in chassis dyno reported horsepower. Here are several of their shortcomings:
      1. Thereís a whole power delivery system between the flywheel and the driven wheels that absorb energy at different rates. These include transmissions, differentials, tires and clutch components. They all have different amounts of drag at different loads and RPMs, and they all heat up and cool separately.
      2. Its harder to control the environment. Chassis dynos offer mathematical corrections for air density, but that canít effect how coolers reject heat, etc.
      3. You generally donít control for humidity. Water displaces air, period.
      4. You canít always run as consistently as you want. Good dyno installations have closed-loop water and oil temperature control so this doesnít play a factor.
      5. You canít always control the throttle as accurately on a chassis dyno.
      6. You canít hit all the load sites you want.
      7. They are less safe, and engine failures can hurt the entire driveline or even chassis.
      That said, chassis dynos are plenty accurate for many things. But when youíre doing development work, nothing gives you consistency from run to run, day to day like a good engine dyno.



      One great thing about this project is the brain power involved. Everyone had their expertise and the group gelled incredibly well. Our team consisted of:
      • Maz Fawaz, our fearless leader from Singer Vehicle Design, who stayed calm and made sure we were properly fed and watered.
      • Eric Hsu from Cosworth, our dyno operator and an excellent tuner in his own right.
      • Tim Gergorio, the General Manager at Singer whoís also responsible for a lot of the mechanical parts that go into this.
      • Tim Whitteridge from Apex, who handled the entire electronics system design and wiring harness build.
      • Jae Lee from Mirage International, expert on all things air-cooled Porsche.
      • Lyon Kaplansky from Cosworth, the Indycar & F1 veteran engine builder whoís contribution in terms of technical experience and knowledge is immeasurable.
      • Tyler Hara from Cosworth, helping with dyno setup duties.
      In addition, Jay Kavanaugh from Edmundís Insideline.com stopped by and said hello; its always good to see him!
      Its not often you get to work with a team as good as this. Special thanks to Ken Anderson and Jeremy Sundt from Cosworth for making this happen, and Rob Dickinson from Singer for his vision.

      Source: http://www.apexspeedtech.com/tuning-...e-dynos-matter
      This article was originally published in forum thread: Apex Speed Tech tuning the Singer Porsche motor on an engine dyno + Why engine dynos are important started by Sticky View original post
      Comments 4 Comments
      1. c32AMG-DTM's Avatar
        c32AMG-DTM -
        Very interesting article, thanks!

        In the bullet-list of "who did what" - of all the people mentioned, it doesn't mention who actually tunes the Singer Porsches. Was it Tim W.?

        By "tunes" I mean the individual who is responsible for identifying and specifying the engine-management coding for the appropriate fuel and timing maps, WOT and part-throttle, optimizes lambda values, etc. The software side... not the hardware side. Who did that?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by c32AMG-DTM Click here to enlarge
        In the bullet-list of "who did what" - of all the people mentioned, it doesn't mention who actually tunes the Singer Porsches. Was it Tim W.?

        By "tunes" I mean the individual who is responsible for identifying and specifying the engine-management coding for the appropriate fuel and timing maps, WOT and part-throttle, optimizes lambda values, etc. The software side... not the hardware side. Who did that?
        Wouldn't that be Apex Speed Tech? Paging @Apex Speed Technology
      1. Apex Speed Technology's Avatar
        Apex Speed Technology -
        In the bullet-list of "who did what" - of all the people mentioned, it doesn't mention who actually tunes the Singer Porsches. Was it Tim W.?

        By "tunes" I mean the individual who is responsible for identifying and specifying the engine-management coding for the appropriate fuel and timing maps, WOT and part-throttle, optimizes lambda values, etc. The software side... not the hardware side. Who did that?
        This implies that there's one "tuner" which is how most guys like to present themselves. Its something I specifically want to get away from. Everyone knows some "Mr. XYZ" who's got some secret tuning skills that make them a master of sorts. This kind of approach is limiting and disrespectful to the team of people it really takes to build a good engine calibration.

        So I'm the boss and responsible for all things tuning at Apex. But we couldn't do our jobs at the level we work at without the experience and background of the engine builders we work with, the dyno operator and our wiring guys. So to answer your question, the team above, including myself, are all partially responsible for the tuning. I get input from the whole team based on the data we gather as to what might be the best direction for fuel, timing, intake manifold phasing, etc. I use my experience to guide them and the results we get are superior and more efficient than any one of us could do alone.

        At Apex, there are 3 of us currently that do some degree of dyno work, but we share experiences through detailed reports, meetings and collaboration. We are continually sharing info on new features, updating our base maps and improving our knowledge of systems by sharing our experiences from each project. We interact with engine builders & car owners before, during and after the tuning session to make sure goals are met. This way we can guarantee a more thorough and consistent tune than most "tuners."
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Apex Speed Technology Click here to enlarge
        So I'm the boss and responsible for all things tuning at Apex. But we couldn't do our jobs at the level we work at without the experience and background of the engine builders we work with, the dyno operator and our wiring guys. So to answer your question, the team above, including myself, are all partially responsible for the tuning. I get input from the whole team based on the data we gather as to what might be the best direction for fuel, timing, intake manifold phasing, etc. I use my experience to guide them and the results we get are superior and more efficient than any one of us could do alone.

        At Apex, there are 3 of us currently that do some degree of dyno work, but we share experiences through detailed reports, meetings and collaboration. We are continually sharing info on new features, updating our base maps and improving our knowledge of systems by sharing our experiences from each project. We interact with engine builders & car owners before, during and after the tuning session to make sure goals are met. This way we can guarantee a more thorough and consistent tune than most "tuners."
        There you go, that is a detailed answer.