Reviewed By Lee R (Altus, OK) Reviewed for a 2008 Ford F-350 —11/12/2013 5:27 AM
I really enjoy the gas milage tudor and power.
Reviewed By Joshua B (BURBANK, WA) Reviewed for a 2008 Ford F-350 —6/21/2013 9:07 AM
Bought the chip for extra mpg. It works that way it also gives a lot of extra power I'm performance mode. One defect you can not switch the mode(performance,towing,transmission) while driving. To do this you have to stop the vehicle turn off the key and switch it to on, let it load and then turn it back on.. Not ideal
Reviewed By John F (Waller, TX) Reviewed for a 2008 Ford F-350 —1/18/2011 2:13 PM
I found the Cortex programer very easy to install and have used it so far to improve fuel mileage. At 65-70 mph freeway, I have seen an improvement from 15 mpg to 18 mpg. I plan to make some intake and exhaust mopdifications next.