@panteradoug posted:How exactly did you get the linkage to fit and work after you took up all of the available space in the center valley?
The flexible tubing is far below the throttle body linkage for the butterflies. It is a birds nest in there but it does not conflict with other stuff.
I am running IAC (Idle Air Control) and I don't think others on this forum are using it. It gets separate plumbing from the MAP in an effort to produce a more consistent MAP signal. Today I re-plumbed the whole thing with temporary material so that I can test run the engine. It is inexpensive polyethylene tubing from the hardware store and it works great. The caveat is that I cannot run the engine for very long because it is only rated to 150 degrees and it will melt.
It looks like a possible material to use is called Viton Fluoroelastomer Tubing. It will not melt like my polyurethane tubing did on the first try. I read that it works with push to connect fittings. Does anyone have experience with the Viton tubing?