Quote:
Originally Posted by Yobbo
Hissing under load is a boost leak, get under the car and look at the turbo to intercooler plastic hose, these commonly split, it'll be rather oily!
I fixed mine with epoxy and refitted with a mikalor clamp and used extra strong hairspray as a seant on the mating surfaces.
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i did even smoke test in garage and coulsnt track any leak !! there is also slight hissing sound when depress brake pedal so it may brake servo ends up soon but i dont think so it may cause hissing sound as everyrhing is electronically controlled isnt?