Quote:
Originally Posted by vtknight
Now that I have that idea - I looked up the Exclusive - and beyond the 27 extra HP - another key is that 553 lb ft is on all the time - no overboost function of brief 553 levels. I think that is big. Porsche doesn't claim any better performance from the standard Turbo S - except 0-124 MPH - where they say it is .3 seconds quicker. About exactly what I thought your ET would have been at your altitude before you showed up with a 10.5.
"The 3.8-liter twin-turbocharged flat-six is fitted with a model-specific powerkit, boosting output to a stunning 607 hp and 553 lb-ft of torque. This is 27 extra ponies over the regular Turbo S, and while that torque figure is unchanged, the ES has 553 lb-ft on tap at all times—the pedestrian Turbo S only sees that peak briefly with the standard overboost function."
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I found another piece of the puzzle.
On all of the +1000hp turbo cars that I have tuned with BS3, Haltech,EfiLive,HPT, etc the tuning platform is constant. VE vs RPM vs Timing vs Boost vs AFR vs Safety vs Cylinder Pressure vs Octane vs IAT. Populate the tables and horsepower/torque is locked down vs boost and DA.
Porsche (and some others like BMW with less sophistication) is not following that protocol. Porsche is applying Torque Modeling vs Mass AirFlow modeling. Very sophisticated matrix style predictive tuning.
Bottom line is Instead if locking down the Boost Psi, as all the other methods do, Porsche targets the same power at sea level vs my 3500ft DA by varying the boost based on the DME calculating Real Time DA. One magazine tested the theory and dyno’d A TTS at high elevation vs Sea Level. They could not use any correction factors and it was +- 10 HP on multiple dyno’s.
No models are perfect, so my car at sea level will be quicker and faster, but probably not by large margins.
Even if it matches my 10.51 at 131 with a 1.60 sixty at Brooks sea level track at PBIR, that’s 3 mph more than a 2018 just ran there. There is more power in the ‘19’s.