Still stumbling at high boost (5ktq)

[DGraber460 at aol.com]

It's a long shot but I chased a high boost cutout on my URQ for almost 18 
months. Doing a lot of checking/switching everything from top to bottom. The 
final culprit turned out to be the fuel pump relay. I have 7 relays with 5 
different part numbers that all have matching wiring diagrams stamped on 
their exterior. I finally landed on the right one with all the other issues 
the car had resolved at the same time. None of the numbers match the Bentley 
number, but the one I'm using now is the only one of the 7 that doesn't 
cutout at around 5k RPM.
The main problems that kept me from success earlier were the relay and the 
turbo inlet hose. There is no surefire test to eliminate either of these, and 
I thought I fixed both months ago, only to realize they were still causing 
problems. Once those two were corrected, the rest all dialed in easily and 
quickly.
There is no substitute for perseverance!
Well, none other than experience, knowledge, the right equipment, and..... 

Dennis
Denver