Hi I have a a4 turbo aeb 96 I done a boost leak test today and found that the intercooler has a hole in it not good. but I checked all the pipes and done them up but now the boost gauge isn't reading the vacuum but it boost spikes higher to about 8/9 psi then drops back down to 6/7 psi on the gauge and also disconected the battery 4 30 mins not sure wot is goin on can anybody help cheers
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