My 8v GTI sounds like its blowing raspberries at me. Its coming from right handside of the engine bay (when in sat in the car). The noise is only there on acceleration and gets louder the more I accelerate, but disappears when I let off. Is this a normal noise or does it sound like a leak in the induction system? Iv checked the air box lid and that seams sealed and I can't feel the exhaust manifold blowing, so i dont know? The cars been doing it since I bought it but its starting to get on my pip.