Straight through mufflers are always generally lounder...Super 40's are quiter than the Super 44s...There is also original 40 series was the loudest until the Super 44s came along....The super 44 is suppose to have better sound and better flow path than the original 40.. No drone from the 44s.
Now, I have been told by the muffler man and many that the other Super 40, 50 mufflers do have some drone and are quieter.. For performance and american muscle car sound go with the Super 44 series...
I had super 44s on the goat and it sounded awesome..I converted a couple guys on this forum to go with the 44s and they love 'em...
The Super 44 muffler case is smaller than the others in size as well.. They fit perfect in stock location under the goat...Muffler man added some pipe in area where stock muffler was due to them being smaller than stock...
My new ride the Sierra is gonna have the Original 40 series muffler put on, due to that is what sounds best on trucks according to the five star muffler man who has not let me down yet after doing over a dozen exhausts on several of my previous vehicles....Ex.'91 Dodge Ram Charger,'94 Dodge Dakota, '95 Dodge Ram 1500, 96 GMC Sierra, 98 Chevy Silverado, 99 Pontiac Formula, '01 Dodge Ram, 02 Dodge Dakota, 05 Chevy Silverado, 06 Pontiac GTO, and now '07 GMC Sierra....eh, I might be missing some..
Anyway, I like flowmaster!!
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SOLD: 2006 Torrid Red GTO- Superchips, Poweraid TBS, AEM CAI., JHP Sports Gauge Pod, NGK TR55IX Iridium plugs, Vinyl decals/inlays, Lloyd custom rubber floor mats/cargo trunk mat, window tint, resonator delete, and Flowmaster Super 44's!
