This was a little louder than I wanted.

Sounds great, good deep throat sound....unlike my 1989 prom date

Great quality and a great sound but... I put the long tubes on and had no choice to take off the cats with straight pipes and it was scary loud so I went with the quieter version. Now... With high flow cats and these I wish it was a little louder but it does sound great.

Great sound on my f150. Came with fast shipping. Love the black powder coat.

Flowmaster 40 Delta Flow Center in Center out Muffler. I straight piped (muffler deleted) my 2007 Ford F-150 4.6l 2v FX2 Sport. It has 2.5 inch (outer diameter pipes). It was too loud for my tastes and I get up early for work in the mornings so I felt obnoxious. I decided on this muffler with which I have had no issues so far To make everyone aware, for about a week or so after install you will likely smell an odd burning smell. I think it was just the muffler breaking in. It also could have been the paint curing from heat but I don't know. Anyway, it has a nice cold start sound which is still pretty loud (but not nearly as loud as the muffler delete). It has a very nice low rumble and for anybody looking for an aggressive and respectable sound, you've come to the right place. Anyway, the cold start is nice, loud and rumbly. Once the engine has been running for a while, the idle quiets it down without loss of the warm tone. I can take my truck down the road without feeling like a jerk but still turn heads when I open it up. The interior drone is absolutely minimal (my dad's Grand Caravan has more interior resonance with the small hole in his muffler). The little bit of interior resonance is quiet enough to whisper over moderately even under typical acceleration. The exterior sound is incredibly loud yet clean. Under heavy acceleration (80%-100% throttle), it opens up and sings beautifully. I have friends who have done full Borla Exhausts and full Magnaflow exhausts on their Full-Size and compact pickups and I can confidently say that mine produces the best tone since the muffler change (in my humble opinion, and I know this varies from truck to truck and exhaust to exhaust). Any YouTube videos you find of this muffler on a truck (or any muffler) will not live up to the sound in person (I was naïve and didn't think the muffler delete was *that* loud... it was...). I can honestly say I thoroughly enjoy this muffler and I will likely update this review with pictures and again if anything changes. Sorry for the Long-Winded explanation, I just wanted to let potential buyers get a true insight.HOW TO INSTALL (helpful pointers and my step-by-step first time experience:This center in/center out setup fit my f150 fit about 2 inches between the muffler to the frame (for anyone worried).Measure TWICE cut ONCE. I removed my stock muffler and put in about 4 feet of straight exhaust pipe. Then when I installed the muffler I measured the muffler from the base of the inlet (the base being the part of the inlet port that is welded to the muffler itself) to the base of the outlet (same deal as the inlet). I then scratched this measurement onto the straightest part of the straight pipe with a scoring knife (a pocket knife, sharpie or X-acto knife/safety blade will do just fine). Then measure the total length of the muffler and score that onto the piping as well (2 inches on past the other 2 marks if I remember correctly). The next Step is cutting. Cut the first two marks that you made. NOT the second 2. Try your best to cut straight up and down (perpendicular to the pipe) and make a clean cut. I used a Sawzall with a metal cutting blade (18tpi). After cutting the new area to fit, I pulled the tailpipe out of the hanger and rested it on the ground. I then put the muffler on (logo side down I believe). Place the inlet hole onto the existing exhaust pipe (that leads to the motor). It will be a tight fit. if you cannot get it on easily (I couldn't), take a disc grinder and grind the lip of the exhaust piping 45 degrees all the way around to make it easier to center the muffler on it). Push it on about 2 inches (to the other mark you made). It helps to have a friend for the next part. Have one person hold the tailpipe half steady in the air while you guide the hanger back into the bracket and into the muffler outlet. This may require a 45 degree grind too (mine didn't). Fit it in snugly and then get out from under the vehicle and make sure the exhaust tip is where you want it. Adjust accordingly and remember to remove the "INLET" sticker because it will get hot and will probably burn on. After this, use 2.5 inch muffler clamps to ensure a tight fit (I used saddle clamps/U-bolt style clamps) and torqued them to about 50ft-lbs. Congratulations! It is installed! Enjoy!NOTE: For about a week or 2 you might smell a light burning smell (or heavy depending on your tolerance) on the OUTSIDE of your cab (unless you have holes in your cab). It went away after between 1 and 3 weeks but I just wanted to make anyone aware before they panicked.

Not too loud but enough to satify my needs. Resonator still intact also

sounds great, well built.

Put this on my 3.9 dodge dakota and it gave it a nice deep rumble at idle and under acceleration up to 3k rpm then gets a little ricey but not bad for a v6 though.

I bought this Muffler for my 2001 Jeep Wrangler to replace the muffler on my aftermarket Banks Monster Exhaust. my old muffler lost all of its packing after a few years and developed a loud drone inside. I assume that muffler burnt out because it is immediately after the catalytic converter and the heat was too much for it. The flowmaster is a chambered muffler (no packing to burn out) so I am not concerned with it getting louder over time. The sound is good, not too loud but you can definitely hear it inside, although once you get up to speed with a soft top everything is loud. if I had the hard top Possibly would go with the 50 series