The ecotek valves are basicly a load of rubbish. Just another false claim that it makes more BHP and saves petrol. If it saved petrol, all new cars would have them fitted as standard, but no... they dont because its rubbish. Some cars will be effected in diffrent ways, and its not all bullsh*t, because what it does in theory will help the air combust. but its an utter waist of money because 9 times out of 10 it does Feck all and even when it does its messing with the fuel system. Not only that they try to make you put these things on the main vacuum line to the brake servo?!? thats not ideal.