Think about it....If you have a small 5" cone you yell into vs. a 15" cone to yell into, how are you going to make your voice the loudest? The bigger the tips are, the more it "echo effect" you are going to have to make it louder.
Before i got my exhaust/tips installed (i have 22 x 3.5" ss tips btw) i put one of the tips over my stock tailpipe and started my truck. Just the tip itself put up to the stock system, i could hear my exhaust ALOT more with that tip sitting on the tailpipe. Tips make a good amount of difference if you want a little extra sound.
2oo1 Ford Ranger SOLD!
Proud Owner of a 2005 Silver FX4 F150