I installed this on my 18 Touring 2.0T. The exhaust itself wasn’t overly difficult to install. It took me maybe 3-4 hours to remove the old exhaust, place this one, and lazily run the wiring for the valves. If you’re replacing down pipe or front pipe back then it will take you substantially longer. I replaced the Downpipe and front pipe the week before and they were rather difficult due to rust and access. The connection of front pipe to exhaust back was the most difficult to remove. It ended up requiring penetrating oil, torch, and an air impact. Anyway, exhaust went on easily and fit nearly perfect. I still need to do some fine adjustments to avoid rubbing and even out the tips but was very happy with the fitment. I found holes in the trunk just about the actuators of the exhaust where you can run the wiring for the valves. You’ll have a wire from each muffler that run to a box and then a wire from the box to cigarette lighter. On to the important part, the car sounds amazing. The start up is loud with valves closed but is rather quiet while driving. The start up and driving is rather loud with open but I love the sound. It has a nice deep throaty almost diesel sound to it at low end. It does get very loud with cackling under hard acceleration. I can get some decel popping that sounds nice but haven’t found the right combo of gears and rpm. The button that switches being quiet and loud is a little finicky but it could be operator error or location of the receiver box. I couldn’t tell you on any extra power. I’m sure it gains some but I can’t tell with few things I’ve done to my car. So far Ktuner stg 2, PRL HVI, precision works 70a front and rear mounts, PLM down and front pipes, and now the hirev active valve exhaust. Love these 2.0 accords!