Reviewed By jim D (Rosemount, MN) Reviewed for a 2005 GMC Sierra —4/4/2017 5:11 AM
Helped throttle response and solved the transmission shifting in and out of overdrive when towing a fishing boat at 65 mph (5.3L)
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.