yeh but when u havent got a vtec that is doin less km than a vtec with a full tank there has to be a problem
Not really cos if the vtec car is not flooring it, it may be why he is getting better milage. Also he may be counrty driving and your city driving, all depends.
Also if o2 sensor only kicks in whilst cruising. If your starting and stopping all the time its not gonna help.
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