Mileage tune?

[FMBL]

After reading this I filled up our 07 with 89. Got about a 2 mpg gain with the factory settings. On the second tank ti see if it stays consistent. kinda curious how much a tune would help me also.

 

[JJones]

After reading this I filled up our 07 with 89. Got about a 2 mpg gain with the factory settings. On the second tank ti see if it stays consistent. kinda curious how much a tune would help me also.

you got a lot luckier then i did...we only saw .5mpg gain going to 89.

 

[Campi3ell]

I opted for the 89 tune in my truck when Justin was in ATL last year.
Combined city/hwy driving I'm averaging 17mpg. 50-ish on the streets, and 70-ish around town hwy cruising.

On longer highway trips I've gotten around 18.7 ~ 19.5mpg. Not too bad, really.
Hell, I get better gas mileage than my buddy who drives a Honda Pilot, not to mention mom and her Expedition. She averages 14.5 in town and 16.5 on highway... stock, of course.