I have a 10-8-5 boost pattern possible cause

 

Explain better. Is this only in 3rd gear?

 

more in 3rd and 4th

 

sorry just bought car and engine rebuild 9000 mile ago

1 brand new turbo and other was rebuilt
oddly enough they didnt upgrade to silcon vacuum lines
could this be the problem

 

You may have a leak from one of the origonal lines. Time to start looking

 

Seems like you are getting NO secondary boost. Start by checking to make sure the control rods are properly connected. Mine popped off just a couple of months ago. I bought a new e clip from a hardware store and had full boost within minutes.

 

http://www.autosportracetech.com/RX-...leshooting.htm

 

Check the rod connections first because its one of the easiest things to check. If that is what the problem is, you can waste a lot time looking for a boost leak.