Reviewed By WKurt T (N. Charleston, SC) Reviewed for a 2012 Ford F-150 —5/29/2014 8:29 PM
Love th 50 series deltaflow. Great sound. Not too loud.
Reviewed By Josh K (Holly, MI) Reviewed for a 2010 Ford F-150 —4/20/2011 9:48 AM
Exactly what I was looking for. Low in can drone even up to 80 mph, a great compliment to my K&N cold air intake. Haven't had it on long enough to know MPG gains. Good rumble at start and idle. Increases as RPM's rise until about 3500 and then it sounds stock. Very happy with my choice.