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Jennifer Simmons
Reviewed in the United States on February 10, 2022
Husband is happy after he had it installed. I'm not happy with the louder sound but that's me😊. He likes the sound
505th Para.
Reviewed in the United States on August 17, 2021
Rattles and makes an unbelievable noise. Flowmaster went down hill now that they are all made in China. I bought my last flowmaster muffler. Customer lost .!!
NOYB
Reviewed in the United States on March 26, 2020
Turned my f250 factory exhausted truck into a real sounding truck. To be honest, my truck sounded like a Geo Metro before. It was a little embarrassing. After cutting the factory muffler and one resonator out and replacing it with this, it finally sounded like a real truck. Not douch-baggy loud, just the right amount.Next up.....the wife's minivan.
Allen
Reviewed in the United States on September 17, 2019
Install slips over factory sizing, works well. Paint smells for the first few starts then goes away. Loud but no drone.
PDQ
Reviewed in the United States on May 13, 2019
My 2015 GMC 2500HD with 6.0 (gas) motor sounded more like a Prius than a truck of it's size. It took about an hour to install the Super40, and wow, what a difference. I took the time to start the truck without the muffler and after it was added, and it seems louder and "throatier" with it on. Loud cold starts, quiets quickly. Not bad at idle, screams under acceleration. Obnoxious drone at 50-55, but at 75 it has quieted right down. Be prepared to have about a foot of extra 3-1/2" pipe, as the muffler is shorter than the original. Also, the offset was off a little, so the hanger just after the muffler had to be cut and extended a little. Overall, very easy install.Only reason for the 4-star is the level of drone at 50-55. Around town, it is perfect.
Patrick St-Onge
Reviewed in Canada on March 29, 2019
parfait
Customer
Reviewed in the United States on November 26, 2019
Live the sound of this flowmaster on the Ram 2500 6.4 Hemi. No interior drone, barely audible inside at highway speed. Very aggressive tone when accelerating.
Customer
Reviewed in the United States on January 10, 2019
Sounds absolutely fantastic on my 6.4 hemi. Needed 3 exhaust clamps and a 19” piece of 3.5” pipe. One person quick and easy install. Recommend putting a few coats of high heat paint on it, flowmasters usually rust apart after 2 PA winters, also recommend deleting the resonator.
TWOOD
Reviewed in Canada on October 12, 2018
Sounds awesome on my GMC 3500 6.0!
Mike Van Saun
Reviewed in the United States on April 24, 2018
Very easy to install! All you need is 2 u-shaped clamps 1 butt connector clamp and an extension pipe! Took a whole whopping 30 mins to cut out old exhuast and install new one. The sound is incredible!
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