To maintain a given A/F ratio the Kev fuelling mod needs to be turned down a little in the hotter months of the year, particularly if ambient goes much above 25C. For a given setting, say 5 o'clock, the hotter it gets outside past 25C, the richer the A/F ratio will become. The same works in reverse; the colder it gets the weaker it gets, so you need to increase the setting slightly.

Could it be you're increased fuel consumption is related to the better/warmer weather? All depends on at what the baseline ambient temperature was when you set your fuelling mod up originally.

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