Reviewed By phillip r (ASHDOWN, AR) Reviewed for a 2014 GMC Acadia —1/15/2017 7:42 PM
more air, a little more gas milage like the bark off idle, looks good under the hood
Reviewed By thomas f (BOONESMILL, VA) Reviewed for a 2005 GMC Sierra —3/17/2016 4:26 AM
Simple install, has that typical whistle between 2,500 and 4,000 rpm. Note: didn't whistle at 1st but did after I seafoamed my truck to improve performance. Definitely pulls hills better. No need for the expensive metal ones.