Originally Posted by Andrew1993
Yea I had a flowmaster muffler put on, but it sounds almost stock. ppl are telling me it has to break in so I wondered how long it would take
Either you had like a 70 series or a 50 SUV Flowmaster put on or the muffler shop pulled a fast one on you. The two Flowmaster mufflers I justed talked about are among the quietest mufflers they produce.
I have a 50 series Delta flow on my 3.0 which has more catalytic convertors than your truck, assuming it's a 93, and it's leaps and bounds louder than factory and even louder than the Dynomax setup I had.
You should check the muffler case to see if it is stamped with Flowmaster and a series, that might take the mystery out of the quietness you're experiencing.