Flowmasters are a nuisance on long trips. They drone by design. Drone is that sound they make when you're cruising at steady rpm, like driving down the highway.
The majority of through-style mufflers have a nice idle, and a loud sound at WOT, but do not drone down the road.
3" pipes will be louder, no matter which mufflers you choose.
If you decide to go with through style mufflers, make sure they're not packed with fiberglass or anything else that can deteriorate. The good ones are packed with ceramic plates or stainless steel
|