Alright so I would like to have my speedo recalibrated to the tires. I hate the guessing game I have to play with it. I am begining to plan to plan a trip outwest to Wyoming, YellowStone park and I would want to have my correct speed for that long of a trip. The total miles for one way is 1,933.
So I have a few options and I am trying to figure out which is best. On one hand is the Hypertech and the other is Accu Pro. The Hypertech offers more stuff but also cost almost twice as much and it is VIN locked. The only way someone else could use it is if i returned mine to stock setting. With the Accu Pro several JK guys could go in and buy it and split the cost. But if people are really seeing a mpg improvement of 2 mpg it could be worth it. Just to drive to YellowStone and back is a total of 1933 miles. At my current estimate of 15 mpg thats 258 gallons. If I increase by 2 and get 17 mpg thats 227.5 gallons. The difference is 30.5 gallons at todays rate of $3.20 is a savings of $97.60.
Down below are more details. Please read and give me your opinion on these.
Option 1: Hypertech Max Energy Power Programmer $379.99
-recalibrates for larger tires
-set new gear ratio (if you have installed new gears)
-set different fuel trim for regular and premium (8 whp increase and 15 ftlbs of tq with regular gas)
-set fan temp control
Here is the link at Q.
http://www.quadratec.com/products/17614_5001.htmYou have to ignore all the other stuff it claims it does because if you notice it is listed for several models. People who have used it have reported a 2 mpg gain as well and have noticed some power improvement during accel and highway cruise speeds.
Option 2: Accu Pro Calibration tool $199.99
-recalibrate for larger tire
-enter new gear ratio
Here is the link from 4wd.
http://www.4wd.com/productdetails.aspx?partID=16011With this one there is less to do. Users have reported no performace increase but they said the transmission shifts at diffrent times now and is a smoother shift.