Finally: Dyno charts of de-snorked 986S!!!

[Bisimoto]

Originally Posted by porsche986spyder

I wonder if the shape of the snorkle tube being a long smooth part leading up to the intake had some type of airflow/aerodynamics pupose. Therefore it would have been better to test it on the dyno with a fan blowing on the intake vent to simulate the car moving forward, since it was sitting still when you did the before and after test. Just a thought to consider for future testing.

I did use a fan in 2 areas: the front for the heat exhanger/radiator, and the rear driver's side vent, but only to provide cool air. A single cylinder in our P-car engines demands air at 2000RPMs that none of my industrial grade fans can generate. As a matter of fact, a NACA duct (superior to our Porsche side vents) is only efficient as a ram at above 200mph.

2 weeks ago i performed a test using a fully radiused intake pipe on single cylinder induction tubes, and gained 12whp on a 320whp engine. Infusing such technology in our induction may prove benefitial, but the factory ram tube, incorporated with the "deflection cup" is a restriction, and hence, the power gains seen in the upper RPM range.

Thanks for the suggestion...great minds think alike!