Ive had magnaflow exhaust on my '00 v6 for about 2 years. Ive been looking a lot at youtube and noticing that the flowmaster 40's seem a lot deeper and give more of a rumble. Has anyone heard both the systems and able to give me some help as to what truly is better of the two. Thanks!
Well im a Magnaflow guy so im going to lean towards them. Ive always thought the Magnaflow had the deepest, most different sounding tone than any other exhaust. But i havent heard some of flows newest products like super 44's that are supposed to sound deeper, so i cant say. And flows do sound good for sure, so either way ya cant lose.
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-04 Mustang GT-Intercooled Kenne bell 2.1L supercharged @10psi, C&L cold air intake, mass air flow, Sumitt racing 75mm throttle body, Magnaflow catback with Bassani X-pipe, chip and dyno tuned, 3:73 gears, B&M short shifter, FMS lowering springs and UPR caster camber plates, UPR upper/lower control arms, UPR subframe connectors. Kumho 275 up front/Kumho XS 315 in rear. Currently 420RWHP/435lbtq
-Daily Driver 04 Toyota Tacoma PreRunner, Blacked out, TRD suspension, K&N filter.
I have Magnaflow, so I'm a little biased, but they are my favorite. I would say keep the Magnaflows and put in Magnapacks resonators, they sound really good.
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02 Silverstang: Show:, GT rear bumper, Black FR500 Ford Racing wheels, red painted brake calipers, black rear spoler, black leather, mach 460 stereo w/ 6 disc changer, shorty antenna,
Go:custom X-Pipe, Magnaflow Exhaust, 5-Spd, AM cold air intake, VMP 93 Octane Tune, Ford T-Lock, 3.73 gears
First of all that dude probably has a stock Y pipe, and a terrible camera which does it no justice. Magnapacks with an X pipe sound like a really good V6, not like a V6 thats trying to sound like a GT.
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02 Silverstang: Show:, GT rear bumper, Black FR500 Ford Racing wheels, red painted brake calipers, black rear spoler, black leather, mach 460 stereo w/ 6 disc changer, shorty antenna,
Go:custom X-Pipe, Magnaflow Exhaust, 5-Spd, AM cold air intake, VMP 93 Octane Tune, Ford T-Lock, 3.73 gears
Once again, it sounds throatier in person. Magnaflow flows better, and I'll admit, they don't sound as good as the Flowmasters do. However, I have Magnaflows with an X, and never has any GT owner told me it sounded bad, or that it sounded ricey.
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02 Silverstang: Show:, GT rear bumper, Black FR500 Ford Racing wheels, red painted brake calipers, black rear spoler, black leather, mach 460 stereo w/ 6 disc changer, shorty antenna,
Go:custom X-Pipe, Magnaflow Exhaust, 5-Spd, AM cold air intake, VMP 93 Octane Tune, Ford T-Lock, 3.73 gears
Once again, it sounds throatier in person. Magnaflow flows better, and I'll admit, they don't sound as good as the Flowmasters do. However, I have Magnaflows with an X, and never has any GT owner told me it sounded bad, or that it sounded ricey.
The majority of the "gt" owners would not know what a good exhaust sounded like on a 6.
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Block .20 Bore 3.830, ARP Head Studs, Ford Girdle, Scat 4340 Forged 6.125" H-Beam with Ross Forged Dished Pistons 8:7:1 compression, KPP Cam Reground 224* .587" Intake / 222* .567" Exhaust 114 LCA, 110 IC, Self Ported Heads with Self Ported Upper intake ported lower intake with a matching ported throttle, Mac long tube headers, Flow master 40 series mufflers, 3.73 motive gears, Eaton posi trac, Sct livewire, Bilstien shocks and struts, Eibach pro kit springs. FS: POLISHED VORTECH V2 3.8L KIT
well to be honestly flowmaster doesnt give you any hp , ill tell you this because my brother used to have flowmasters on his gt , he changed his flows for some magnaflow exhaust and he told me that they sound much better and sound louder.
Magnaflow Vs. Flowmaster 
