Quote:
Originally Posted by sunita83
Good list - but why side mirror abscent or remove - I am very used to it and cant go without it
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There's a small improvement in aerodynamics when the mirror is removed. Most people don't feel the gain is worth the inconvenience. Some people have tried internal side view mirrors which are not a perfect solution.
Quote:
Originally Posted by andypm1
what about spark plugs? What are the best a spark plugs to increase mpg?
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It's unlikely you would see any improvement as long as your plugs are the correct ones for your car and clean/properly gapped.