8042543 40 Series Chambered Muffler

Installed this on my 07 F150 with the 5.4 v8, had to have a small section of 2.5 inch pipe welded in since this muffler is smaller than the stock muffler. Sounded pretty quiet at first but it's gotten louder over the past few weeks. It's not too loud that it will disturb your neighbors and make you the jackass of the neighbourhood, but it's loud enough that you can actually hear your engine when you step on it. Which is exactly what I wanted. Not annoying when you're cruising on the highway either. YouTube if you want to hear what it sounds like. Won't make your truck sound like a ferrari but will help it sound more like a truck.

Installed on my 2016 300c 3.6l with the rear muffler delete as well. Great sound and it doesn't sound like a cheap rally car wanna be import. Has a great sound on startup and idle. At first I was a little nervous hoping it wouldn't be too obnoxious but after the install I knew I made the right decision. Just enough to turn heads in a good way. Its a little loud in the cab at first startup but once warmed up its not bad. Steady, sporty hum at higher RPMs (2500-3500). It does resonate a little in the cab when accelerating but just briefly. At highway speeds you don't hear it at all. You do hear it a little when you are lugging the engine around 55-65 MPH in 8th gear but after that, it quiets down and you don't even hear it anymore until you get on it. Pair this with the Tazer and adding after market OEM paddle shifters, this will transform your 300c into a pretty fun ride.

Installed on a Dodge Dakota 2002 4.7L quadcab. It sounds fantastic. Moderate interior noise while accelerating around 1500-2000 rpm. Which sounds so good its not loud just a good drone. Once up to speed 55mph you can hear it rumbling but not any louder then the wind noise. IMPORTANT Keep in mind this is not a direct fit you will have to have a 12" piece of pipe (2.5in I.D. on one end and 2.5in O.D. on the other end of said pipe.) My friend has a Dakota with a 5.2L with a SUPER 40 series which has almost no interior noise and not quite as loud at idle.

Bought for my 07 F150 with a 4.6L V8, it sounds amazing and it was well worth the money as a direct fit replacement to the stock muffler. It has a very deep loud tone to it so it’s not obnoxiously loud. Would recommend this muffler to anyone.

K&N filter + Flowmaster 40 = Nissan Frontier sounds nice.