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Originally Posted by dlb
thanks, t vago. did you keep track of your mileage before adding an mpguino? i wonder how much difference it has made to your driving habits and fuel economy.
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I can't say that it helped a whole bunch, as I had already fine-tuned my driving habits prior to installing my MPGuino. I rather installed it to see the effects of hardware modifications to fuel economy. For instance, I could measure about a 5.5% increase in fuel economy due to installing aero wheel covers, and I can see an improvement in fuel economy whenever my EGR valve opens up. It's rather interesting to see my UltraGauge and my MPGuino track each other when the EGR valve remains closed, but see up to 15% difference when it opens up. The MPGuino, which actually measures fuel pulses, is more accurate.