16.1-16.3??? What engine do you have? I drove my 4.4 from NJ to ID and got 18-20mpg. Have yet to establish what the Dinan S2 upgrade will give me, but it sounds and feels awesome! Clean filters(air & gas) do help, as well as staying away from that ethanol crap. Need more info.

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Mark _______________________________
2001 X5 4.4i topaz blue/sand Sport, complete Dinan S2 , hitch, V1, tint, BSW Stage 1, Alpine INA-W910BT
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