Hi I have b5 passat with the lovely atw motor . I have just recently swapped to a ko4 and now begun to over heat/ boiling the coolant and will make 10psi and drop it to 0 and won't build no more boost just straight 0s. I have checked all charges pipes and redone all vacuum lines as the diagram...
Hi, I have a mk4 jetta 1.8t big turbo, bigger injectors, etc. The car wont hold boost at all you can tell it wants to take off but wont hit more then 3 psi. I have tried everything
And many other things but nothing is working please help!!!