Well I needed to cook my lunch in the middle of my ride, so I wrapped a sausage roll in two layers of tin foil and when I stopped I put it on the front exhaust pipe below the filter for 5 minutes, and then moved it to the cat and sump are for another 2 minutes. When I opened it up the pastry was hot but the filling was cold so next time it will be 1 layer of foil and 10 minutes under the sump and above the cat. Any advice would be helpful.