Flowmaster 524703 70 Series Muffler - 2.25" Dual In / 3.00" Center Out - Mild Sound Review

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(More customer reviews)I read the reviews for this before I bought it for my 08 Nissan Titan extended cab and now think Flowmaster writes the reviews. First I bought this 70 series because all the reviews say it is quiet, WRONG! There is a constant loud roar and I have a 8' bed and it is right in front of the rear wheels far enough so I shouldn't hear much but itm is still LOUD, all I can say is I'm glad I don't have a crew cab with the 5' bed!!!! If you going to be on the road for any time you better have the radio on or you will really start hating the roar after about two hours. On a recent trip my grandson complained the whole time the roar was interfering with him hearing the headrest DVD player (we play it through the raido and turn the fade all the way to the rear). As far as increase in gas milage there is none in fact it looks like I am getting about about 2 MPG less all the time. I pull a 27' fifth wheel when I go camping and I have a 16' enclosed trailer I carry 2 atv's that I race and the millage dropped when I pull either and the town/highway driving without pulling is down from about 16 MPG to about 14 MPG.
DO NOT THINK THAT THE MUFFLER WILL BOLT RIGHT UPTO YOU CAR OR TRUCK! I looked it up on their website and it showed this was a direct replacement for my stock muffler but it is a universal fit! Had to take it to a welding shop because the diameters don't match and I didn't want a bunch of adapters on my exhaust system. There is anywhere from a 1/4" to a 1/2" diameter difference in the size of the inlet and outlet and what is on the truck. In fact the difference on the outlet was so much I had to pay extra to have a new 3" tail pipe put on.
The guy at the muffler shop said it would all staighten out, the noise would get quiter after the inside got coated with exhaust and after a few tanks of gas the compter would reset it's self for the muffler and I would see an increase in the MPG. That was back in March and it is now August and it is still loud and there has been no increase in the MPG. All I can say is I am glad I kept my stock muffler and tail pipe so I can put them back on and enjoy the ride.


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