"You guys better start tooling up to make a pile of those Cayman exhaust systems, because the excitement in my thread is about to explode. I just posted my post install dyno results. An impressive 21.4 horsepower gain. Nice job man. You guys just raised the bar by a significant amount in regard to catback horsepower gains. And that is coming from one of the clubs biggest skeptics and Farnbacher Loles, both of which add substantial credibility to the claim... From outside the car, the exhaust note is a lot louder than the non existent stock exhaust note, yet in the car there are times when it doesn't sound any louder at all."