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Discussion Starter · #1 ·
I have 05 9-5 2.3T Sportcombi wagon.... 93k miles on it and when I accelerate at full power turbo boosts up fine and runs good, but when I reach freeway speeds (now any consistent speed) the turbo will jump up and down and makes the car feel like I am jerking...

I was reading about the Boost valve being jacked up, and others say its the DIC going bad, however it looks fine to me, and I have not swapped it out to see if that is the problem...

just changed out the spark plugs and they looked good (as in no oil/carbon burn marks) and the DIC did look good...

Anyone have any suggestions? I saw a post about the boost not being all there(plug one of the 3 inlets into the turbo), but that doesn't seem to be my problem...
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