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Old 06-18-2010, 12:50 PM   #2
jspaeth
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Quote:
Originally Posted by Silvia_Drift View Post
The boost will hold steady at 19psi until I get to about 6600rpm. From then on all the way to the 8000rpm limiter, boost falls off to about 15psi before I hit the limiter.
There are a few things:

1) Boost leak (i had this and it only caused boost drop off at high RPM)
2) Wastegate flapper can't stay shut enough to hold boost
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