Im wondering why ......
Im wondering why ...... nobody seems to run Mufflex systems on here. With 3", 3.5", and even 4" pipes why dont some of the hard core guys go with their pipes? Im starting to wonder if they dont make good power or something. 
TECH Resident
Joined: Jul 2004
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From: It's hard work to look this good
I've never heard one in person but what I have heared on the internet doesn't sound to good to me. I think ls1 sounds has a couple clips. The spin tech muffler sounded like *** to me as well. Thats just my opinion. My hearings not that great anyway, thanks to magnaflow w/no cats and my teenage years of thinking bass was cool and got the girls attention. WHAT... HUH.... Did you say something? 
Originally Posted by SLVRZLS1
I have had the 4" Mufflex sys. with the spintech and the Flowmaster, and I lost 13 rwhp with the spintech over the Flowmaster, but let me warn you, the flowmaster is VERY raspy!
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I have heard the 4 inch system with spintech muffler on an LS1 cammed SS... it sounded amazing. I was going to get this system, but everyone keeps telling me it flows like crap. I am not about to spend $600 for only the sound and no flow!
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Originally Posted by WS62000
I was going to get this system, but everyone keeps telling me it flows like crap.
Now, I'm not saying this systems does flow good or not, I'm just saying I'd like to see some numbers.
The reason I brought this up is because most people on here want alot more flow than stock and try to keep maximum ground clearance. It seems to me that on the passenger side of the driveshaft that you can tuck pipe in the driveshaft tunnel while the driver side presents problems with tucking because of the torque arm. So if you can get the same flow while tucking atleast some of the pipe in the tunnel why not do it? It has been said that a 3" pipe flows about the same as two 2.25" pipes so a 4" should atleast flow the same as two 3" pipes. The only drawback I can think of is without the crossover in the exhaust there wont be as much scavenging. I guess after reading some of the post I can conclude that either the Mufflex exhaust flow like *** based on peoples experiences, they flow good based on peoples esperiences, or alot of people just dont know what the hell they are talking about based on chatter about them. 
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11 Second Club
Joined: Aug 2004
Posts: 254
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From: Liberty SC
Originally Posted by DMNSPD
you lost 13 rwhp just from switching mufflers? Is there anything else you might have left out? What are the specs on your car?
I lost it by changing nothing more than the muffler, I have stage 2 LS6 heads from TEA, a custom Grind cam similar to the F13. The Flowmaster Flows real good, its not an 80 series crossflow, its the deltaforce series.
Originally Posted by SLVRZLS1
I lost it by changing nothing more than the muffler, I have stage 2 LS6 heads from TEA, a custom Grind cam similar to the F13. The Flowmaster Flows real good, its not an 80 series crossflow, its the deltaforce series.
delta force flows like **** too
Yeah, I thought about getting the mufflex catback but hate the mufflers they use. I wouldnt be surprised if the 4" spintech and flowmaster mufflers flow less than a 3" straight through muffler. I wish they would use a straight through muffler like a magnaflow or ultraflo or would sell just the 4" pipe.
11 Second Club
Joined: Aug 2004
Posts: 254
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From: Liberty SC
Originally Posted by Full-Force
SLVRZLS1, you ever come to Greer? I used to live in Powdersville, it was an Easley address though.
I use a 3.5" I-pipe being feed from a 3" Y. Advantage is I can use a QTP 3.5" electric cut-out. Cross section of 3.5" = 9.6" SQ. Stock 2.5" = 4.9". I think doubling is plenty for a 346 engine.
On The Tree
Joined: Jan 2004
Posts: 113
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From: state college PA
Man i was really thinking about getting the 4" mufflex with the spintech. How can this system not flow well. I thought the spintech was a good flowing muffler. Anybody else with this system have any imput.
"I use a 3.5" I-pipe being feed from a 3" Y. Advantage is I can use a QTP 3.5" electric cut-out. Cross section of 3.5" = 9.6" SQ. Stock 2.5" = 4.9". I think doubling is plenty for a 346 engine"
Me as well, 3.5" all the way out the back courtesy of Stainless Works ( their headers and y-pipe with bullets too ). PLENTY for a 346, I almost wonder if it's 2 much sometimes.
Me as well, 3.5" all the way out the back courtesy of Stainless Works ( their headers and y-pipe with bullets too ). PLENTY for a 346, I almost wonder if it's 2 much sometimes.
On The Tree
Joined: Jan 2004
Posts: 113
Likes: 0
From: state college PA
Originally Posted by Viper
"I use a 3.5" I-pipe being feed from a 3" Y. Advantage is I can use a QTP 3.5" electric cut-out. Cross section of 3.5" = 9.6" SQ. Stock 2.5" = 4.9". I think doubling is plenty for a 346 engine"
Me as well, 3.5" all the way out the back courtesy of Stainless Works ( their headers and y-pipe with bullets too ). PLENTY for a 346, I almost wonder if it's 2 much sometimes.
Me as well, 3.5" all the way out the back courtesy of Stainless Works ( their headers and y-pipe with bullets too ). PLENTY for a 346, I almost wonder if it's 2 much sometimes.