I can hear blowing from somewhere its deffinatly cat forward which i have thought i heard for a while but lately i have noticed a loss in boost. The strange part is if i pull hard through the gears it boosts fine but if im sitting at 3000 rpm and floor it its very flat. Its not a load blowing and doesnt seam to scream when on boost infact i hardly notice it when im in the car apart from the lack of power. From this i guess its the manifold but how much of a nightmare are they to get off? Im thinkin i may take it to Midland VW as i have read so much good about them but if its something i could do i would rather. Anybody had anything like this before?