millertime9 Posted September 23, 2023 Share Posted September 23, 2023 Hi, my car got serviced yesterday and now the MPG calcs are acting weird Ie, on "2" setting which is the long term mpg, it fluctuates all over the place! I had the spark plugs and all filters changed, is it possible they reset fuel trims or something and that's cleared settings and will take a while to settle down? Thanks Quote Link to comment Share on other sites More sharing options...
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