Land Rover!
I thought the exhaust was blowing on the new RR I bought, but on closer inspection it turned out to be a plastic plug (the sort used to affix items to each other, such as plastic inner wings etc) had been pushed through one of the airlines! Simple fix of course until it gets booked in, I removed the plastic cover, applied some duct tape to the holed line, and then refitted it all, taking care to push the errant plug into the correct place!
Never thought I'd be using the old fixes on the new one :s
Oh and on another note, I think they've forgotten to apply the engine limiter.....