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    Help revs fluctuation and p0299 underboost

    Kayobong I have attached images of the egr valve condition and movement when vcds actuates the rod. The rod actually only moves a little probs 0.5cm when actuated by vcds not an inch but moves freely. However when I stripped down the egr valve and got to the mechanism which moves the rod up and...
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    Help revs fluctuation and p0299 underboost

    NHN I upload the image of the two brown wires.
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    Help revs fluctuation and p0299 underboost

    NHN how would I check for back pressure issues. Also if I understand correctly to do a temp wire test I would get brand new connectors for the relevant sensors and wire them all directly to the ecu, is the correct from my understanding or did you mean something else. As I have stated I did...
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    Help revs fluctuation and p0299 underboost

    Kayobong I have checked the egr valve a while back. The wiring is fine however The valve itself isn't bad according to me. In the valve around the rod that moves up and down to allow the gasses to be recycled has slight carbon build up. But when I test the flap in vcds it move up and down...
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    Help revs fluctuation and p0299 underboost

    Hello I have an audi a3 8P1 170HP with an engine code BMN. The issue I am having is with the boost of the car which is appalling and revs fluctuation. The car boosts but not in a consistent way. When the turbo kicks in the car will boost all the way up to 3500rpm-4000rpm max then cuts out...
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