I wanted something that could replace the weak standard exhaust on my truck. Used hoses from a 3" Dynamax set and a Flowmaster Super 44 with a short extension hose that fitted perfectly and ended with a 3" to 5" tip. Noise is average on cold starts and boomy when you hit the gas. The fuel management gives an intermittent hum at lower revs, but it's not as noticeable when cruising on the freeway.