Didn't get a chance to install the ghetto 2-stage boost but will bring ti with to the track.
Good news is I found the boost leak(s) and cause of high idle. I plugged the turbo inlet and put compressed air into the pressure tap on the comp housing. Soapy water blew bubbles at the TB gasket and the pipe to TB connector hose, and a weld on the BOX flange (that must have always been there)
OK, no problem to fix those... took the IC to TB pipe off and then the TB off the intake... and then I found the real problem. The TB shaft was broken at the screw hole on the side closest to the throttle lever!? hole in the plate was probably the cause of the high idle, bingo.. WAIT a MINUTE, Where is the Screw!?!?!??
Crap! OK, so the setup has the TB inlet facing down towards the IC and then goes up into the intake, the screw head side is on TB inlet side... so maybe it fell into the IC? I put the magnet on flexible shaft in to the IC.. nothing. Then I shoved it into the intake plenum and fished around.. nothing. hmmm.. OK, snuck the camera into the IC and took a pic, no screw. Then took several pics of the inside of the plenum of the intake and nothing that looked like a screw. The runners / raised port velocity stacks are on the side of the plenum and I was thinking crap, how the hell did it fly up into one of those? I'm sure it could have, but then, I think it would have hurt an intake valve, piston, head, exhaust valve, turbine
... hmmm.. looking at the pics the floor of the plenum is pretty much flat except the Air temp sensor and one vacuum/pressure tap... hmmmm... pull the vacuum line off and bingo, there's the screw!
yay!
OK, so now I gotta decide what to do... this TB was junk. BTW, it was a "POWER" brand off ebay, and it was pretty cheap, so guessing Chinese for sure. Iwas working on the car to fix the issues so I could take it to the track tomorrow. Hmm... well, it is a Ford Mustang TB, what are the chances someone has one on the shelf? Called up Winner's Circle in Joliet and they had both BBK and Edelbrock 75mm TBS in stock! I headed out and ended up picking up the BBK as it was $15 less and I think it looked a little nicer too. All flange surfaces were machined and the Edelbrock some were "as cast"... I'm sure both work OK. Also picked up a spare TB gasket and a weatherpack connector. The Power TB had an adjustable TPS mount and I modded it to use the mopar TOS. The BBK (and edelbrock) didn't have they type of mount, but they did come with a Ford TPS... so I figured the connector was all I needed.
Went home, prepped TB (filled AIS holes with cold weld, modded TPS, swapped AIS block off plate from old TB.) and put it all back together. After the TB was sealed up, found and fixed a couple more boost leaks.... and woke up the neighbors at about 11
we'll see how she does at the Grove tomorrow!