14th Nov 12 Hi Andrew, The sensor on the pipe going into the near side intercooler under the headlight was the correct boost sensor and I’m now running the turbo part too. I’ve now mounted the unit on the near side in a compartment next to the battery next to the bulkhead. I’m running map 2, zero, and am happy with results just at zero, look forwards to gaining even more power by trying different maps/settings. Best Regards, Duncan Audi A4 3.0 TDI Quattro (55)