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"Fluttering" mechanical boost gauge
my factory boost gauge doesn't work so i installed a mechanical gauge. Under WOT it flutters pretty wildly between 11-13psi. If I accelerate slowly and gradually build some boost it is nice and steady till i foor it. So at part throttle making 6-7psi it's steady, but at full boost it's fluttering like a scared cat. Does this sound like a bad wastegate or maybe a boost leak (aka: o-ring problem)? I have had the intercooler off several times and the o-rings appear ok. I don't hear any hissing sounds under boost indicating a vacuum/boost leak either.
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