Leyland49er Posted March 31, 2015 Share Posted March 31, 2015 Hi there I'm thinking of fitting a tuning box to my fiesta but having read a lot of threads I am unsure if it's possible, and or where to get a reliable one from. Can anyone offer any recommendations for one they have fitted and what sort of performance increase and improved mpg can I expect. In real terms I'm getting only 47mpg from careful driving. Sent from my iPad using Ford OC Quote Link to comment Share on other sites More sharing options...
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