Got this installed on my 2006 coupe after the intake, plenum spacer, headers, and straight test pipes into the stock catback. Car is a different ride! The power is nicely linear and I picked up 4mpg compared to my untuned ecru with the mods. Higher redline, no 0-60 training wheels, and all smiles here.
Hypertech for my 06 g35x
After installing the disk set-up which was quick, the steps to download current information was really simple. Then the hook-up to the car and following instructions was as straight forward and as easy as the web site explains. The results will not overwhelm you, but are noticeable. My car was slightly quicker (1st and 2nd gear) and gear transitions a little smoother. Can't say I noticed an improvement in gas mileage just yet. Lastly, I unlocked the top speed which allowed my car to get to higher speeds with significantly less effort. Overall, I was pleased with the results. Next up, air intake maybe?