The system includes the special end pipes. The integrated exhaust valves can be connected to the original system. You can connect an additional remote control and this makes the system open for programming. This remote can be built-in anytime after the system has been connected. The increased HP has been only measured after the system was built-in and several tests have been made, an additional 424 HP was measured. We also have this on video and will soon upload it to youtube. For more information, you may also visit our website at www.capristo.de.