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 Charles R (RICHARDSON, TX) Reviewed for a 2016 Chevy Colorado —2/14/2017 5:13 AM
Taking from some of the information I found on a few other reviews and articles, I was hoping the Max Energy 2.0 would resolve the "chuggle and hesitation" on my truck (a known problem that GM will not or can not fix). While it did help on the city driving issues, the highway speed hesitation is still a problem. The programmer is pretty easy to use if you read the instructions first and follow the on-screen instructions. I like the five program option. I currently have two loaded.