Hi all, I've been looking at de-cat link pipes to use with the standard mufflers, I can't stand that big ugly cat box. They're all around the $400 mark which is pretty steep, there's a talented guy in Geelong who can make me one for around half that. I was showing him the setup i wanted and it struck me, why not cut the standard system just in front of the flapper valve instead of after, and use a longer link pipe, the flapper must be pretty restrictive. Has anyone done something similar? I'll probably need PCV and autotune i guess, any thoughts?