APEXi A'PEXi - N1 Evo Extreme (Catback) - 2023+ Honda Civic Type-R [FL5] ** IN STOCK **  N1-X (With Out GT Frontpipe)

Really straight forward install if you buy the w/o front pipe (I have prl front pipe) only 3 14mm bolt/nuts and a few hangars, just make sure you get pry bars and you should be good also just make sure to torque under 30ftlb another tip is be EXTREMELY careful with stock valve actuator removal because it might need some force when pulling that un clips the metal coil and finding out the orientation is a nightmare because it spins after you reset it if it happens to you watch the fl5 Apexi install by Dustin Willam’s look at @10:59 if you haven’t plug it in to reset it and zoom in on @11:08 if you already reset it with out the coil on to see how it goes on it should have tension while turning the actuator counter clockwise to Aline the thread when bolting down and that same tension should be keeping the valve closed if the actuator is lined up that is home about 15 degrees clockwise is where the valve closes it should require force clockwise to line up the threads back home because it’s extra force after it’s closed. It has a very deep rumble has small drone on highway if you stay below 5th gear but gets drastically quieter in 5th and more in 6th if you have hondata and mess with the exhaust flange positioning be aware there is no individual setting so you can customize the flaps for comfort, sport, and type r I recommend 0 percent for the whole chart(if some left over 0 flap will open) in comfort, leave sport stock ,and 200 percent for the whole chart in type r . This way comfort is your anti ticket mode sport has stock configuration so flap works depending on throttle and rpm and type r is your show off mode but also is a performance mode INDIVIDUAL MODE CHANGES FLAP SETTINGS ACCORDING TO ENGINE MODE SETTING IN INDIVIDUAL SETTINGS IN CAR NOT A SETTING IN HONDATA. So what this means is if you use individual engine mode on type r you will get type r hondata flap settings vice versa when you change to comfort or sport depending on your ho build 3 inch exhaust might hurt your low end so for my goal of 400 this exhaust should be perfect for my whole rpm band is it worth 2500$ idk of course we want stuff to be affordable but only time will tell If the exhaust withstands the test of time then most likely me would argue it is worth it over cheap 1k$ exhausts premature cracks

Richard G. 5/5 Verified July 10, 2026