One guy just used a cigar to blow smoke in through a hose into a port somewhere. Not sure where that port is, but the upper intake boot would be another place to plug into.
That said, great DIY...finally...brings Seth's machine to life! Nice!
Upcoming NYC dates: Jan 8 and 27. See Facebook for other shows and PM me if you can make one...love to see you there!
Mangofy your E46!