Fuelly log graphs
By the way, I just added a link to my fuelly.com log in my signature (thanks for the suggestion Jyden).
If you click on the link you can see graphs over the last six months or so. You can see that my mpg (Imperial) has jumped recently from 'about 70' to 'about 80'. This is at least a 15% improvement, and it coincides with me starting to plug the car in every night. Difficult to tease out exactly how much of that improvement is due to the alternator delete, but I'm guessing I'm getting at least a 10% improvement from the alternator delete, and the other 5% or so is due to a combination of engine pre-heating and the slightly warmer weather, (...although it was an extemely mild winter anyway with virtually no frost.)
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