Need help from Turbo gurus

[JShadzi at aol.com]

In a message dated 10/8/00 9:39:15 AM Pacific Daylight Time, 
THEEARTHGUY at cs.com writes:

<<  if I give it full throttle, it 
 blows massive unburned crap out the back with a lot of pinging.  If I give 
it 
 half throttle, the turbo spools up nicely to it's peak and fires the car 
down 
 those onramps.  Is there anything I can do to get, say...9 or 10 psi without 
 all the problems?  I don't think the wastegate has a replaceable spring...
 
 Chris
 Theearthguy at cs.com >>

    Chris, by pinching the wastegate line, you have likely cut off all the 
flow to the wastegate, esentially running the turbo with no control-that is 
why you are overboosting.  The proper way to go about this is to use a valve 
to restrict the flow, slowyly, and in steps till you get the desired amount 
of boost.  A small brass valve will work well for this application.
Javad