Reviewed By Brandon B (GUTHRIE, OK) Reviewed for a 1999 Chevy Tahoe —11/29/2014 8:00 AM
It's works as advertised. Kind of expensive for what it does but , it's cheaper than having a shop do it wrong.
Reviewed By Kendall M (SALINAS, CA) —12/12/2014 12:27 AM
I used the premium fuel setting, 100% shift firmness, recalibrated my Speedo, up'ed the rev limiter and shift points and the speed limiter and it only took five 5mins and I can definitely feel the difference. IT was as big of a difference as my cold air intake worth It! I can also feel more power even when it's not wide open!
Reviewed By Robert T (Vidor, TX) Reviewed for a 2011 Ford Expedition —8/29/2013 8:04 AM
I was very pleased with the E-CON. I installed it on my wife's 2011 Expedition. I wasn't concerned about the 40 extra horses, but bought it to improve my mileage. I checked the mileage on several trips without it and then with it. By the vehicles mileage indicator, at 70 mph on cruise, I got a 2 mph increase, from 20 to 22mpg. What surprise me was at 75, the mileage went from 18 to 21.5mpg. If you put the pencil to it, the E-CON will pay for itself within 10,000 highway miles.