Reviewed By joe k (Davison, MI) Reviewed for a 2003 GMC Yukon —4/21/2014 8:17 PM
I like the Hypertech it was a little tricky to install the program but once I got it figured out....its well worth it...def noticed a difference.
Reviewed By Pavel B (Albuquerque, NM) Reviewed for a 2004 GMC Yukon —2/7/2008 10:33 PM
I bought HyperPAC hoping to achieve some performance gains and for the various diagnostics programs it offers. Installation is simple and straightforward, uploading performance tunes takes less than 5 minutes. Performance gains are consistent with the dyno charts Hypetech has on their website - modest but noticeable. I tow a trailer and acceleration from standstill and throttle response are better. My benchmark is a steep grade on I-25 before Santa Fe. With the stock tune the rig tops at 50mph on 2nd; after installing the premium fuel tune I was able to take it at 60mph. With this tune engine seems to develop more hp after 4000rpm than with the stock tune. I also like the engine monitor program which allows me to check on transmission temp. I also used the dyno program but you need to weight your truck for accurate results. Regarding fuel economy, there seems to be a modest improvement (14.2 city vs. 13.9 with the stock tune on winter gas-ethanol mix). In sum, I find this product to be useful and fun to use but do not expect miracles.
Reviewed By Kyle G (LEWISVILLE, TX) Reviewed for a 2016 Ford F-150 —9/12/2016 8:06 AM
As my title states, it's a good product and calibrated my speedo since I put 35's on. The only reason I give it 4/5 starts instead of 5/5 is because I had to put 33's in the programmer to calibrate my speedo correctly. When I put 35's and went for a drive, my speedo read 70mph when I was barely doing 60mph, what the heck? So I had to calibrate my truck about 4 times to get it dead on which was a bit annoying, but it eventually worked. Worth the $200 for me, I can't stand my speedo being off!