Ok I do not have to time to read through every thread tonight to find out potential problems I need to find this boost leak right now so I can go to Seven Stock tommorrow morning. I can hear the hissing sound of leaking air till after secondary turbo engage then the sound disappears. Naturally I am not getting the .7 kg/cm2 the PFC is programed for on the primary side because I can hear the air going into the atmosphere. What can cause this problem? I am scoring the induction system schematic right now to narrow the search. Help please I want to drive the RX7 to seven stock not the GMC Sonoma Pickup.

 

Two locations pop into my head, but I'm leaning towards the CRV. Check the line running from the rats nest to the CRV (the "other" stock blowoff valve).

The other big spot is the charge control valve, which is the little golf-ball sized actuator that sits at the center of the y-pipe. Check all the hoses leading to/from there.

You can still drive it with a primary boost leak. I would just avoid pushing for boost below 4500.

Dave