One thing worth noting from this image
is the lack of silencer (muffler) on the exhaust. I was following it through and there is a single box which is mounted at the rear, with the input and output ends (if thats the correct phrase) on the same end.
I think mine may be blowing slightly, need to get underneath and check but there is a definite "blow" like sound when the window is open, but I may just not be used to Petrol
