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Old 07-23-2008, 12:24 PM   #6
Scooby Newbie
Member#: 180483
Join Date: May 2008
Location: Sheboygan, WI
2005 Impreza WRX
WR Blue - Cobb Stage 2


Hey I had the same problem! But mine started when I couldn't reach proper boost while being stage 2. I turned the wategate arm tighter to achieve proper boost. I turned it a total of 5 complete turns! Then went out and bought a new T hose setup by the turbo and then the car was over boosting. So I had to turn my wastegate arm back out 3 or 4 complete turns. That seemed to do the trick for a couple days. But then the other day it was spiking/oscillating really bad! My stock boost gage was jumping way up to .12/.13 then down to .09 then back up to .12. But it would only really do that once. It would rise like normal, but it wouldn't stop until .12/.13 then drop then rise again.

I turned my wastegate arm back out another full turn, and seemed to help for now. But does any know the cause of this? I think I am going in the right direction to solve this problem...
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