Flowmaster or Magnaflow?

97blkgt · December 21st, 2009, 05:15 PM

Hey everyone, I need new mufflers on my stang..and I'm having a hard time deciding between flowmaster and magnaflow... I've heard magnaflow outperforms flowmaster, but i've also heard magnaflows won't hold up as long..

Does anyone have any experience with this?

(not looking for biased opinions on sound..)

weems · December 21st, 2009, 05:22 PM

Magnaflow will last much longer than flows, they are stainless steel. Flowmasters will rust pretty quickly.

01KnightRiderGT · December 21st, 2009, 05:25 PM

Flows FTW!!!!!! i have Flows AmericanThunder 40 Series and havent rusted, i have them for about 4 years now and not one spot of rust, and the sound awsome.

wrr1020 · December 21st, 2009, 05:30 PM

I'd go flowmaster between the two. I'm not a big fan of magnaflow but to each there own. I'm running a mac catback and i couldn't be happier with the sound, hopefully will be pairing it with a pro chamber or off road H soon.

weems · December 21st, 2009, 05:34 PM

Originally Posted by 01KnightRiderGT

Flows FTW!!!!!! i have Flows AmericanThunder 40 Series and havent rusted, i have them for about 4 years now and not one spot of rust, and the sound awsome.

I also have flows, and they DO rust, rather you want to believe it or not. I love the way they sound and actually swapped my magnaflows for flowmasters but they are no where near the quality that a magnaflow is.

Originally Posted by wrr1020

I'd go flowmaster between the two. I'm not a big fan of magnaflow but to each there own. I'm running a mac catback and i couldn't be happier with the sound, hopefully will be pairing it with a pro chamber or off road H soon.

I guess you didn't read the OP's post about not wanting biased sound opinions.

v606er · December 21st, 2009, 05:37 PM

Originally Posted by weems

I guess you didn't read the OP's post about not wanting biased sound opinions.

Some people can't read.

I have Magnaflows...still in the box...

But they look very well built. Stainless steel, pretty solid.

01KnightRiderGT · December 21st, 2009, 05:42 PM

Originally Posted by weems

I also have flows, and they DO rust, rather you want to believe it or not. I love the way they sound and actually swapped my magnaflows for flowmasters but they are no where near the quality that a magnaflow is.

I guess you didn't read the OP's post about not wanting biased sound opinions.

I guess you also didn’t understand!

And mines haven’t rusted.

weems · December 21st, 2009, 05:43 PM

Originally Posted by 01KnightRiderGT

I guess you also didn’t understand!

And mines haven’t rusted.

I understood quite well, and I was commenting on your post. And just because yours haven't rusted doesn't mean that they don't rust. General nutswinger mentality I guess.

kthnxbai.

Pittbull · December 21st, 2009, 05:44 PM

ive had flows on my car for a whilllleeeee and they ARE rusted a lil bit but i mean NOBODY sees them. i have no personal experience with magnaflow but flowmaster has been around longer and you hear more people going wit flowmaster over magnaflow, i dont really kno why that is. Im happy with my flowmaster mufflers.

I8ACMRO · December 21st, 2009, 05:52 PM

I had Super 44's on my car and then switched them to Magnaflows. The in-car noise is so much quieter w/ the Magnaflows and they actually sound better to me when they are at idle and you stand behind the car. Although, I plan on getting MAC's soon cuz I love their sound the best.

97blkgt · December 21st, 2009, 05:54 PM

anyone had any problems with the magnaflows packing loosening and becoming too loud?

I8ACMRO · December 21st, 2009, 05:56 PM

Originally Posted by 97blkgt

anyone had any problems with the magnaflows packing loosening and becoming too loud?

Nothing so far for mine even though I've only had them for 6 months

wrr1020 · December 21st, 2009, 05:59 PM

I never told OP to get mac's i just mentioned my setup. Flowmasters and Mac sound very simliar and Mac's are almost $100 cheaper. I was thinking of going flowmaster before i bought my macs but i read and even heard clips on youtube and they sound identical so why pay more for it.

weems · December 21st, 2009, 06:04 PM

Originally Posted by wrr1020

I never told OP to get mac's i just mentioned my setup. Flowmasters and Mac sound very simliar and Mac's are almost $100 cheaper. I was thinking of going flowmaster before i bought my macs but i read and even heard clips on youtube and they sound identical so why pay more for it.

I agree 100%, I love the way mac's sound.

I8ACMRO · December 21st, 2009, 06:07 PM

MAC's sound similar but they have a distinct sort of rasp sound to them that IMO sounds WAY better than Flows.

97blkgt · December 21st, 2009, 06:15 PM

WRR1020- Thanks for the advice on flow vs mac. I'll check them out on youtube tonight.

I8ACMRO- Did you notice any performance difference when you went to Magnaflows? I heard they don't have as much back pressure and I know you need at least some of that w/ the 4.6.

I'm suppose to take the car to my mechanic tomorrow. I bottomed out and tore a huge hole in my muffler.. can't stand the awful sound anymore..

weems · December 21st, 2009, 06:20 PM

Originally Posted by 97blkgt

WRR1020- Thanks for the advice on flow vs mac. I'll check them out on youtube tonight.

I8ACMRO- Did you notice any performance difference when you went to Magnaflows? I heard they don't have as much back pressure and I know you need at least some of that w/ the 4.6.

I'm suppose to take the car to my mechanic tomorrow. I bottomed out and tore a huge hole in my muffler.. can't stand the awful sound anymore..

You won't notice a power increase/decrease by switching mufflers. 1-2 hp at most.

I8ACMRO · December 21st, 2009, 06:21 PM

No performance difference. You won't even notice it unless you do a full catback. It's like an O/R mid-pipe, you lose bottom end cuz of it opening up your exhaust but it does help on the top end.

So basically performance for your car will be none.

97blkgt · December 21st, 2009, 06:32 PM

ok, thanks... I already have the o/r h-pipe..I really prefer the magnaflow sound... but the mechanic told me they wear out faster.. I heard something somewhere about the metal mesh inside the muffler loosens and makes it louder.. but i've also experienced the current flowmasters I have now having the baffles break loose and rattle.

I8ACMRO · December 21st, 2009, 06:47 PM

Originally Posted by 97blkgt

ok, thanks... I already have the o/r h-pipe..I really prefer the magnaflow sound... but the mechanic told me they wear out faster.. I heard something somewhere about the metal mesh inside the muffler loosens and makes it louder.. but i've also experienced the current flowmasters I have now having the baffles break loose and rattle.

That's what happened on my Super 44's and it actually shot out of the tailpipe. Only reason I know that is cuz my girlfriend was driving behind me and saw something metal fly out

December 21st, 2009, 05:15 PM	#1
97blkgt Regular 1997 Mustang GT Join Date: Dec 2009 Location: Concord Posts: 164 iTrader: 0 reviews	Flowmaster or Magnaflow? Hey everyone, I need new mufflers on my stang..and I'm having a hard time deciding between flowmaster and magnaflow... I've heard magnaflow outperforms flowmaster, but i've also heard magnaflows won't hold up as long.. Does anyone have any experience with this? (not looking for biased opinions on sound..)

December 21st, 2009, 05:25 PM	#3
01KnightRiderGT Hardcore Enthusiast 2001 Mustang GT Join Date: Feb 2009 Location: Miami,FL Posts: 1,817 iTrader: 0 reviews	Flows FTW!!!!!! i have Flows AmericanThunder 40 Series and havent rusted, i have them for about 4 years now and not one spot of rust, and the sound awsome. __________________ Black Stang Member #13 315's Crew Founder My Track Videos

December 21st, 2009, 05:30 PM	#4
wrr1020 Regular 2002 Mustang GT Join Date: Sep 2009 Location: So Cal Posts: 430 iTrader: 0 reviews	I'd go flowmaster between the two. I'm not a big fan of magnaflow but to each there own. I'm running a mac catback and i couldn't be happier with the sound, hopefully will be pairing it with a pro chamber or off road H soon. __________________

December 21st, 2009, 05:44 PM	#9
Pittbull I Post Entirely Way Too Much 2001 Mustang GT If you're not first you're last Join Date: Sep 2009 Location: Rock Hill, SC Posts: 5,892 iTrader: 6 reviews	ive had flows on my car for a whilllleeeee and they ARE rusted a lil bit but i mean NOBODY sees them. i have no personal experience with magnaflow but flowmaster has been around longer and you hear more people going wit flowmaster over magnaflow, i dont really kno why that is. Im happy with my flowmaster mufflers. __________________ Stock Rear Springs FOR SALE! PM Me Stock 99-04 GT Exhaust Manifolds FOR SALE! PM Me

December 21st, 2009, 05:59 PM	#13
wrr1020 Regular 2002 Mustang GT Join Date: Sep 2009 Location: So Cal Posts: 430 iTrader: 0 reviews	I never told OP to get mac's i just mentioned my setup. Flowmasters and Mac sound very simliar and Mac's are almost $100 cheaper. I was thinking of going flowmaster before i bought my macs but i read and even heard clips on youtube and they sound identical so why pay more for it. __________________

December 21st, 2009, 05:22 PM	#2
weems Tech Exchange Head Honcho 2003 SVT Cobra 11.70 @ 121 Join Date: Aug 2006 Location: Forsyth/Statesboro, GA Posts: 9,176 iTrader: 3 reviews	Magnaflow will last much longer than flows, they are stainless steel. Flowmasters will rust pretty quickly.

December 21st, 2009, 05:54 PM	#11
97blkgt Regular 1997 Mustang GT Join Date: Dec 2009 Location: Concord Posts: 164 iTrader: 0 reviews	anyone had any problems with the magnaflows packing loosening and becoming too loud?

December 21st, 2009, 06:15 PM	#16
97blkgt Regular 1997 Mustang GT Join Date: Dec 2009 Location: Concord Posts: 164 iTrader: 0 reviews	WRR1020- Thanks for the advice on flow vs mac. I'll check them out on youtube tonight. I8ACMRO- Did you notice any performance difference when you went to Magnaflows? I heard they don't have as much back pressure and I know you need at least some of that w/ the 4.6. I'm suppose to take the car to my mechanic tomorrow. I bottomed out and tore a huge hole in my muffler.. can't stand the awful sound anymore.. __________________ 03 PI 4.6, 2 row Fluidyne radiator, CAI, 90mm MAF, 24lb fuel injectors, 75mm TB/Plenum (P&P), o/r hpipe, Magnaflow mufflers, Steeda timing adjuster, 12lb alluminum flywheel, King Cobra clutch, Short throw handle, 3.73 gears, Eibach springs

December 21st, 2009, 06:32 PM	#19
97blkgt Regular 1997 Mustang GT Join Date: Dec 2009 Location: Concord Posts: 164 iTrader: 0 reviews	ok, thanks... I already have the o/r h-pipe..I really prefer the magnaflow sound... but the mechanic told me they wear out faster.. I heard something somewhere about the metal mesh inside the muffler loosens and makes it louder.. but i've also experienced the current flowmasters I have now having the baffles break loose and rattle. __________________ 03 PI 4.6, 2 row Fluidyne radiator, CAI, 90mm MAF, 24lb fuel injectors, 75mm TB/Plenum (P&P), o/r hpipe, Magnaflow mufflers, Steeda timing adjuster, 12lb alluminum flywheel, King Cobra clutch, Short throw handle, 3.73 gears, Eibach springs

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