Flowmaster Vs. Magnaflow
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Flowmaster Vs. Magnaflow - 6/22/2007 10:31:05 PM
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*Old_School*
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Joined: 6/19/2007
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Which is better? And BTW, I heard that Flowmaster lost their patent and that now knock offs will be being made by everyone, including magnaflow, with the same sound and preformance of flowmaster. Anyone else heard that?
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RE: Flowmaster Vs. Magnaflow - 6/23/2007 9:18:14 AM
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otnietdehoooo
The Chop Shop Moderator
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From: Ft. Worth, TX
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I just got a Magnaflow and I think it sounds pretty nice. I haven't listened to a blazer with Flowmaster (other than clips on the internet) so I don't what they would actually sound like.
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RE: Flowmaster Vs. Magnaflow - 6/25/2007 5:19:59 AM
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EuroGoldLS
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My Blazer has a flowmaster 40. It sounds good but I want it louder. I think I may grab me a new 44 and stick it on later in the summer. I have heard good things about Magnaflow, but they have a different peak sound point than flowmaster.
Flowmaster has not lost the patent on the deltaflow design, however they did sell their patented resonater and glasspack designs that they were developing early this year... I think Summit or Dynomax may have picked it up though, which are both good muffler companies.
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My theory is that every disrict in the USA tries to send their lying scumbags to either prison or Washington D.C. -rivereye
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RE: Flowmaster Vs. Magnaflow - 6/25/2007 8:38:48 AM
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Jigg
Posts: 494
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I've had an FM40 with a catco high flow cat and 2.25" piping, and i JUST had a Magnaflow 18" Muffler with a Magnaflow high flow cat and 2.5" piping put on my truck.
Magnaflow has a MUCH better sound than the flowmaster. The flowmaster was louder, but it was raspy and sounded like crap (IMO). The Magnaflow is also stainless and comes with a lifetime warranty.
I'll post a sound clip tonight, i literally just had it installed this morning.
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RE: Flowmaster Vs. Magnaflow - 6/25/2007 9:33:27 AM
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FFJustin99Chevy
Posts: 381
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From: Harrisburg, PA
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I realize that this is a Flowmaster versus Magnaflow competition here, but I'd like to do a little advertising for Dynomax. I have a Dynomax Super Turbo system and love it. It has a great mellow sound at low RPMs and the 2.5" piping really allows the motor to breathe when you get on it. The best part about it is that it won't cost a fortune like most of the Flowmaster and Magnaflow systems. You can pick up everything you need to bolt right up to the cat's 3-bolt flange for $160 (muffler, pipes, hangers).
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RE: Flowmaster Vs. Magnaflow - 6/25/2007 4:17:03 PM
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RCars2
Posts: 896
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From: Wisconsin originally but now im in Phx, AZ
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quote:
ORIGINAL: EuroGoldLS
My Blazer has a flowmaster 40. It sounds good but I want it louder. I think I may grab me a new 44 and stick it on later in the summer.
HEH, i got a 40 too and i agree, its loud but should be louder  I gotta say though i really like the throatyness of the flowmaster's vs the magnaflo's. Just personal preference i guess but ive heard both side by side (my blazer vs another at an offroad meet) and i still stand by my 40 series (plus mine was louder).
Edit: For reference this is what Dale sounds like Clicky
< Message edited by RCars2 -- 6/25/2007 4:39:08 PM >
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-Rob
"what fell off of where!?!?!"
Repair List:
Fender Rubbing Issue
Fuel Pump
Alignment
T-Case <--Fixed Finally
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RE: Flowmaster Vs. Magnaflow - 6/25/2007 4:24:23 PM
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lastcoupe
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About 5 years ago I had a Magnaflow installed on my tuned-port injected Trans Am, and I loved it, but every time I heard a Flowmaster I kicked myself in the ass for just jumping on a Magnaflow. The next time I bought a muffler, it was 2-super 40 Flowmasters, and I have never bought another brand since. My Blazer has a super 40 and it's plenty loud for a daily driver, and the performance increase was at least noticeable. IMO, Flowmaster should have a pattent on their SOUND, it's awesome.
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RE: Flowmaster Vs. Magnaflow - 6/29/2007 6:09:23 AM
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TheBrettster
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Euro just cut off the pipe after the flowmaster, it will be plenty loud, loud enough to set off car alarms. Trust me i did :P
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RE: Flowmaster Vs. Magnaflow - 6/29/2007 9:42:02 AM
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*Old_School*
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power is not a issue for me with my blazer. Thats what the nova is for :)
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RE: Flowmaster Vs. Magnaflow - 6/29/2007 11:04:22 AM
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RCars2
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quote:
ORIGINAL: BLK85
I dont know if it is the same on the TPIs but I know it has been dyno proven on the LS1s (maybe LT1s too cant confirm that) that the Flowmaster actually gives you less power than stock exhaust. That is a reason why I am hesitent to go with Flowmaster, it makes me wonder if FM is just to around to make sound and not power.
Im sure everyone is going to get on here saying "I noticed a huge difference over stock with my FM:" but I dont care. A butt dyno means nothing to me. Show me a dyno graph or timeslips and I will make up my mind then.
I cant speak to power increase but I'm finding about 1-2mpg more at the pump vs my stock exhaust. If you have seen whats under most of the blazers stock its any wonder how they move any exhaust gasses. My tail pipe looked like it was beat with a hammer to get over the rear axle and I'm pretty sure the outlet pipe was smaller than the inlet pipe. At any rate thats just what I've found.
_____________________________
-Rob
"what fell off of where!?!?!"
Repair List:
Fender Rubbing Issue
Fuel Pump
Alignment
T-Case <--Fixed Finally
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RE: Flowmaster Vs. Magnaflow - 7/31/2007 10:18:34 PM
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blazinloud
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From: Saskatoon, Canada
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Lmao!......beat with a hammer......funny....
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RE: Flowmaster Vs. Magnaflow - 8/1/2007 5:13:56 AM
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EuroGoldLS
Posts: 3121
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From: Princeton, NC, USA
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quote:
ORIGINAL: TheBrettster
Euro just cut off the pipe after the flowmaster, it will be plenty loud, loud enough to set off car alarms. Trust me i did :P
If I do anything else, I'm gonna go strait pipe with resonator only. That will be loud enough for me. : )
_____________________________
My theory is that every disrict in the USA tries to send their lying scumbags to either prison or Washington D.C. -rivereye
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RE: Flowmaster Vs. Magnaflow - 8/1/2007 7:17:10 AM
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Jigg
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FWIW, the Magnaflow isn't a baffled muffler, you can actually see right through it.
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RE: Flowmaster Vs. Magnaflow - 8/2/2007 5:42:43 AM
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DetroitMuscle
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Get a dynomax bullet. A Flowmaster works if you believe it does, and magnaflow actually helps but you can get the bullet for 35 bucks all day long brand new and it flows better then most.
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RE: Flowmaster Vs. Magnaflow - 8/2/2007 5:12:24 PM
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blazinloud
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From: Saskatoon, Canada
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too bad the main restriction isnt the muffler, i dont think you get any gains from replacing the muffler alone, other than sound.
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RE: Flowmaster Vs. Magnaflow - 8/3/2007 5:41:44 AM
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DetroitMuscle
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quote:
ORIGINAL: blazinloud
too bad the main restriction isnt the muffler, i dont think you get any gains from replacing the muffler alone, other than sound.
The main restriction on a 2nd gen is the size or should I say lack of size of the manifolds and front pipes. As long as a cat is in good working order it will produce the back pressure needed not to burn up the valves. The Muffler has a big part in the flow as well as the sound. If they didnt have anything to do with flow then every muffler would be the same.( not to mention dyno testing of the muffler with different engine combo's)
On a stock vehicle the main reason for a muffler change is the sound but put some power in front of that muffler then you have to change it to accomidate the flow of air/fuel and spent gases that are in the engine.
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