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| had a similar product wrapped around the fuel line just before the fuel went in to the injection pump on my VW diesel pickup. It gave it about 4 mpg increase. The engine was idleing when the salesman wrapped it around the fuel line. 15 seconds later the engine was idleing 200 rpm higher on the same amount of fuel. I ran it until it must have jiggled off and departed the vehicle. Mine was all plastic housing with the magnets wrapped inside. I wish I could find the mfg. so I could replace it. lots of luck jeff | |
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Anybody ever seen or used one of these???
