I have to clarify my mpg observations between stock and the two 91 octane tunes (Jusnes tunes). Best stock mpg in my driving conditions (no AC) was 27.5 averaged over 1200 miles. This is basically driving to and from work - quite a bit of stop and go traffic at times. The 91 performace tune (averaged over 1000 miles in same conditions - no AC) has yielded 29.2 mpg. Best tank using the performance tune was 30.5 mpg. Now that I am back to using the torque tune again (I switched over to the performance tune to note the mileage differences), I am averaging 28.4 mpg over a 900 mile period. The torque tune does generate LOADS of power down low and in the mid range, and I attribute the increase in mpg over stock due to the fact that I do not have to push the pedal as much to accelerate, and I can hold gears waaay lower that I could in stock form. I now chug along in 2nd gear at speeds just above those of casual pedestrians. And when I hit 3rd gear, it still pins me and makes me say "WOW!" The mpg that I posted previously (torque tune vs stock tune) was skewed because I was using the AC almost 90% of the time with the torque tune vs 10% with the stock tune. So in a nutshell, you should see a mpg increase using either of the 91 tunes. Anyway, just wanted to give an update on my mpg findings so far - I am pretty pleased now that the summer heat has passed and I can go back to driving without AC.
