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As with several different aero "upgrades" like retrofitting an aerokit front bumper without a rear wing or doing the Boxster Spyder "Ducktail" on a normal Boxster/S, those aren't approved by Porsche because they weren't designed for those cars. However, it is up the discretion of the end user and always recommended to consult a race specialist or performance shop who routinely performs these types of installs.
We've tested these upgrades and are confident in their abilities, but we strongly recommend professional opinions when modifying the aerodynamics of your vehicle.
Originally Posted by Manifold
What is the evidence for increased downforce with this retrofit? How is a typical race specialist supposed to have the aerodynamic data and analysis capabilities to provide balance? How specifically do you envision people will increase front downforce?
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As with several different aero "upgrades" like retrofitting an aerokit front bumper without a rear wing or doing the Boxster Spyder "Ducktail" on a normal Boxster/S, those aren't approved by Porsche because they weren't designed for those cars. However, it is up the discretion of the end user and always recommended to consult a race specialist or performance shop who routinely performs these types of installs.
We've tested these upgrades and are confident in their abilities, but we strongly recommend professional opinions when modifying the aerodynamics of your vehicle.
Putting this on a 991.1 GT3 would have the same effects on every GT3. So rather than every prospective customer spending time and money trying to determine those effects, IMO it makes more sense for you to determine those effects and publish the results, since you're offering the product and implying that it meaningfully improves (rather than worsens) the performance of the car.
Putting this on a 991.1 GT3 would have the same effects on every GT3. So rather than every prospective customer spending time and money trying to determine those effects, IMO it makes more sense for you to determine those effects and publish the results, since you're offering the product and implying that it meaningfully improves (rather than worsens) the performance of the car.
The GT3RS already has too much rear downforce. That's why the wing is set to 0° in the "standard" setting.
The "more downforce" setting is actually hurting your balance.
Apparently (according to the engineers I talked to in the Aero department), they would have liked to set the wing to a negative angle (as the air flow comes angeled over the rear window, the "effective angle" is much higher) to be on the perfect balance but the design department didn't let them.
Long story short, adding a diffuser is the wrong way for a GT3 RS, I would rather recommend the 997 RS 4.0 dive planes that Porsche used to test the effects of the wheel arc vents when they ran the car with the vents closed.
That should give you the 0.1-0.2 extra front cL to match the angled wing / diffuser.
But that is just the engineer talking. The diffuser looks great all in all...
01-17-2017, 11:29 AM
