[brillo]

So I wanted to test my highway mileage on a relatively short trip to the north part of town after getting my new tires (michelin PSS). The route was all toll road so I figured it was a good steady state 70mph test. My car has perrin tune stage 1 tune, perrin filter and a oil cooler. Otherwise its stock.

So after 33 miles round trip my mpg calc (to my major surprise) was 23 mpg (pump showed 1.44 gal). I was like WTF? I made the mistake of not filling up at the same place both times (dumb) so I have to think the pump had an issue. The weather was cool but not cold, no wind, and my car had recently gotten ~25 mpg in my last tank of driving (mixed city/hwy).

Is 33 miles to short a distance to test? Gas pump issues? What else could I be missing?