Reviewed By Katie k (WILMINGTON, NC) Reviewed for a 2003 GMC Envoy —2/27/2015 3:47 PM
Sounds really good in low rpms and can feel the power in the high rpms. I did also do the throttle body spacer.
Reviewed By Jaycee A (Oxon Hill, MD) Reviewed for a 2005 GMC Envoy —5/24/2013 7:51 AM
Simple to bolt on. Took about 15 minutes. Notices right a way the throttle response and within my next full tank of gas the the better mileage I was getting with this upgrade. Great product. Does exactly what is stated. I want to install one in all my rides.