The only probelms that I was having, was keeping the pipes on the mass air flow sensor, and keeping a sufficiant enough seal. I have that all worked out though. I just had to reshape the base of my "T" so that it would fit, and just have just a tiny, tiny bit of play. So that it would give a little with the engine movement, rather then stay stiff,and eventually shake it's self loose enough to lose significant power. When it happend you knew right away.
There have been other little things like fitting different sized tubing , air filteres, heat shields, couplers,etc. Pretty much everything that you see in the pictures at one time or another had a problem that I got to solve. It really has been a pain in the butt.