Just had a local shop here in town install my magnaflow SI/DO muffler along with my 3.5" SS tips. I love the sound of this setup on my truck. It is not nearly as loud as a flowmaster muffler but it is still much louder than stock. You can really hear it rumble when you accelerate and there is absolutely no drone in the cab. I am very happy with this setup. I also had the tips run out the back of the truck on the sides at a 45 degree angle. It looks and sound great. Just wanted to let those interested in a setup like this know how it sounds compared to others.

 

Miles: Good to hear your info. I just today ordered a Magnaflow SISO for my 2004 f150. I hope it is not too loud. I appreciate your comments. Thanks

 

I have Magnaflow exhaust on my 2005 5.4 3v with single side corsa tips and it has a very nice melow sound unlike flowmaster.. good pick..