One of our customers just sent us pictures of his yellow Cayman S from Malaysia that he installed a Racing Plenum and ECU Flash on it. The plenum is a pretty easy install as the main hassle is getting off the engine access panel. The plenum and throttle body are a larger diameter then the stock unit to give you a true 25whp when the car is tuned. The ECU flash process is pretty simple too. The customer was VERY VERY pleased with the performance gain and looking to an exhaust now. Here are some pics. Leave a Reply Cancel ReplyYou must be logged in to post a comment.