Reviewed By Josh A (killeen, TX) Reviewed for a 2006 Chevy Silverado —3/25/2015 8:23 PM
Easy to install and can see a huge difference in the performance in my duramax.
Reviewed By Peter C (Tracy, CA) Reviewed for a 2006 Chevy Silverado —1/25/2012 2:37 PM
Installation on my silverado took about half hour. For people not sure in the engine compartment it comes with a manual with pictures specific to your vehicle. It has added about 1-2 mpg on average and adds a deeper and beastly sounding tone around 2300rpm. It did add a small amount of throttle response as well. It is pricy as CAI's go, but it is good quality so I dont mind paying it. Overall, very satisfied with this product.
Reviewed By Nicole K (Pearl City, HI) Reviewed for a 2006 Chevy Silverado —1/23/2008 3:13 PM
the hyperpac fixed my odomoter, speedometer, tachometer, and transmission due to my aftermarket 22 inch chrome wheels wrapped around toyo proxes. i bought the hyperpac becuase i had my check engine light on after i installed a throttle body spacer under the hood. the diagnostics section doesn't quite solve problems but only tells you the code and leaves you to figure the rest out. my diagnostic trouble code reads "System too lean (Bank 2)." i'm hoping that it is just a leak in the air flow and it doesn't have to do with the actual air/fuel ratio. i am gonna disect my intake today and hopefully solve the problem. other than that, the hyperpac works like a champ. i need to construct my center console so i can mount the pac in a logical and efficient place.