Installed this last night. It was even easier that I thought! 5 minutes start to finish. I used a Stanley knife to cut the pipe. I didn't do it quite as neatly as Cooperman but I wasn't far off.
Initial impressions are good, sounds much better 4000rpm onwards. I bet you could make the sound even better again by replacing the the pipe after the filter with a similar setup.
Initial impressions are good, sounds much better 4000rpm onwards. I bet you could make the sound even better again by replacing the the pipe after the filter with a similar setup.