[yostumpy]

Whilst trying to eek out more mpg from the 110 (2.5 300tdi turbo deisel(best so far is 35.4mpg)) I was wondering about the turbo and the xtra fuelling. Suppose, (just humour me) one was to fit a solonoid valve type thing to the vacum pipe ? that goes from the turbo to the FIP,(the one that increses fuelling on boost) so that once up and running at speed , one could flick the switch and switch off the vacum line, so that you still had boost, but no additional fuelling. Then when needed it could be switched on again. Similar sort of thing to the cylinder deactivation on some new vWs ie if you dont need the power, switch it off. Now would this work, I mean the turbo boost on without the xtra fuel, would it give ANY xtra power, over 'no turbo' and would it cause it to run lean. Any reason not to. ok , you can laugh now.