Reviewed By Luke B (OAK BROOK, IL) Reviewed for a 2008 Mazda 3 —8/3/2015 7:27 PM
Tune is noticeable, definitely more pep and power, just wish it was a little cheaper
Reviewed By Paul H (Gulfport, MS) Reviewed for a 2004 Mazda B-Series —1/24/2012 8:15 AM
Pretty easy to use for programming my truck, and can't argue with the outstanding results. Set it for the mileage mode and gained 1.5mpg (3 tank avg) and still have plenty of power for daily driving. Very easy to change mode when I needed to tow, then return. Also used it to correct my speedo for larger tires and diff; that was a little trickier. Using GPS and cross-checking with mile markers, it was still a little off (6%, down from 9%)). Had to adjust the settings I inputed to get right on (with-in 3%).
Reviewed By Bruce C (Tacoma, WA) Reviewed for a 1999 Dodge Dakota —7/17/2017 10:24 PM
I received the F5 quickly. I read the directions and plugged it in my truck. It is very simple to use and I tuned the truck quickly. Now driving it is different. It is peppier and my fuel average went from 11mpg to 16mpg. It's a Dodge Dakota with the big v8. I will set it to towing when I pull my trailer and I'm thinking it will have better power on the hills and better mpg too. I would recommend this product to anyone.