What a load of balls, My dad fitted one of these to my mums 16v corrado years ago it did nothing apart from make it run like poo and stutter like gareth gates!!!!!!!!
These people talk crap all your doing is adding air into the fuel only to add more at the point of combustion making the ratio all wrong! hence the gareth gates syndrome! pile of poo avoid total wack!
oh and in the instructions it tells you to adjust it until the car runs smooth, basically turning that nurled top bit until the valve is basically off so totally not even worth having it all you do is masacar a perfectly good fuel line, I found the dirty instructions in the garage earlier its all total twoddle these people want there nackers cutting off for selling this useless pap!
Its almost as funny as that battery powered fan intake rubbish!!! ahahahahahahaahha losers!