Average Reviews:
(More customer reviews)I've purchase Max Energy ECON that was upgraded to Max Energy with ease of USB cable for free. I tried the regular tune program and the was very please with the performance gain of my 2007 Navigator in the beginning. BUT my noticed engine "pinging" after the tuning. I tried 93 octane and it still pinged badly when climbing hills and under acceleration. I tried premium tuning with 93 octane and it still pinged. When settings were returned to factory stock, pinging stopped. I called tech support and they told me that calibration of the uploaded file looked fine so they will have to pass the problem to the R&D team for evaluation. It's been 4 days since problem has been passed to R&D team and I have not heard anything from them. I was told it can take up to week but I was expecting some sort of update. While it's being reviewed by the support team, I've noticed another problem while on either of the tuning program. My transmission makes noise and does not engage right away when gas pedal is pressed for acceleration on turns. Again, I returned the tuning to factory stock and transmission is work perfectly now. Now, with the new transmission problem, it's going to take another week to hopefully have a fix. My concern is that by the time every issue has been looked at and if it's not fixed, I will lose 30 day money back guarantee time limit.
One thing for sure is that this device WILL give you performance gain for sure. Engine runs and idles MUCH smoother and stronger. I have not noticed much on the gas mileage improvement though. If they can fix the pinging and the transmission issue, this device is definite KEEPER and worth every penny. If not, I would try Superchip and see how that goes.
Click Here to see more reviews about: Hypertech 33004 Max Energy E-CON Power Programmer for 2007-2009 GM Gas Truck/SUV - 4.8/5.3/6.0L
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