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  1. 2000, E39 525i Auto - Fuel Saving Devices? Scam or Not?

    BMW Tuning Forum
    Hello, I have just last week purchased a BMW with a 2.5 litre engine, which is great for motorway driving as I can get about 33MPG out of it but around 21/22 approx for inner city driving. It has amazing power, great acceleration and really 'flies' on the motorway! Last night I randomnly...
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