Originally Posted by alfriedesq
Its hard to reach any conclusions regarding the testing of parts without knowing that the set up you are working with is optimzed and has no existing weak links or bottle necks.
Last week, I installed a Cosworth Intake on a 06 STI with a Dominator 2.5. After a short period of testing and trying to make additional power, the turbo over spun and blew out a seal. Although we did not realize ANY gains from the Cosworth intake on that turbo, it was clear that the turbo was the limiting factor and could not flow much beyond 400 whp no matter what intake manifold was on the car.
All I can say with 100% certainty is that the Cosworth Intake flows significantly more air than the stock one and it will pick up power on any car which is exceeding the air flow capacity of the stock intake manifold. I made over 80 whp.
Al I have a Forster N/A in for a 60k service and noticed immediately that the factory intake manifold looks like it MAY have been copied by Cosworth to some extent.