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Anyone have Mufflex 4" (Flowmaster)with "big" cam?

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Old May 4, 2003 | 09:20 PM
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Default Anyone have Mufflex 4" (Flowmaster)with "big" cam?

I had a Mufflex 4" (Flowmaster) on my 2000 A4, and it sounded awesome, now I wish I had it with mods in sig. Anyone have any soundclips or input as to how this exhaust sounds with a big cam, headers and orp? TIA, Shawn
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Old May 5, 2003 | 11:17 AM
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Default Re: Anyone have Mufflex 4" (Flowmaster)with "big" cam?

I had that setup for a while and it sounded great.

I'm not sure how well it flowed but it had a deep sound.
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Old May 6, 2003 | 12:16 AM
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Default Re: Anyone have Mufflex 4" (Flowmaster)with "big" cam?

Ask me again in a week or two (kind of)... I should be getting my G5X2 car back some time this week, and will be installing the 4" Mufflex with the Spin Tech.

Believe it or not, I am actually looking for as quiet of a non-restrictive exhaust I can get; will be running bullets or spirals (I have a set of each being made up with V-flanges, so I can swap 'em out FLP style) immediately after the collector, plus the 4" Spintech, so hopefully it won't be too bad...

I know this really doesn't answer your question, but it's the closest I can come.
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Old May 6, 2003 | 12:07 PM
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Default Re: Anyone have Mufflex 4" (Flowmaster)with "big" cam?

I'm running it. I have a '99 with A4 and vig. 3600. My cam is 230/237. It sounds great! It's quiet but with a big rumble. Everyone calls my car Blue Thunder. But when you get on it, it sounds like an all out race car. I LOVE IT!!! Sorry, no sound clips though.
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Old May 6, 2003 | 12:29 PM
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Default Re: Anyone have Mufflex 4" (Flowmaster)with "big" cam?

Believe it or not, I am actually looking for as quiet of a non-restrictive exhaust I can get; will be running bullets or spirals (I have a set of each being made up with V-flanges, so I can swap 'em out FLP style) immediately after the collector, plus the 4" Spintech, so hopefully it won't be too bad...
Please reply back when you get that set up. I'd like to get a 4" system for the flow when I do heads/cam, but I want the most quiet I can get (yet still have adequate flow).
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Old May 6, 2003 | 06:08 PM
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Default Re: Anyone have Mufflex 4" (Flowmaster)with "big" cam?

I think that this is the best thing about the Mufflex 4", You dont need ear plugs when ideling, but when you are on it. It has class and a deep *** tone.. Will a cam change this in either direction? I am curious to..
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Old May 8, 2003 | 04:37 PM
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Default Re: Anyone have Mufflex 4" (Flowmaster)with "big" cam?

Does the Mufflex have any drone or rasp to it?
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Old May 9, 2003 | 01:02 PM
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Default Re: Anyone have Mufflex 4" (Flowmaster)with "big" cam?

Does the Mufflex have any drone or rasp to it?
Yes, the Flowmaster system drones some(Spintech doesn't). And it will only have rasp if your not running cats.

BTW, this system has about as "low" of a tone as you'll get because of the 4" piping. Not super loud like a wide-open Borla or LM, but great deep sound IMO.

Mike
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Old May 11, 2003 | 04:40 AM
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Default Re: Anyone have Mufflex 4" (Flowmaster)with "big" cam?

Question for you all: isn't it pointless to have 4" exhuast since aftermarket Ypipes are only 3? Or do you find 4" Y-pipes?
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Old May 12, 2003 | 12:12 AM
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Default Re: Anyone have Mufflex 4" (Flowmaster)with "big" cam?

Mufflex makes y pipes for the LT1's that are 3 inch into a 4 inch collector, they probally have something like that for the LS1's too.
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Old May 12, 2003 | 01:18 AM
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Default Re: Anyone have Mufflex 4" (Flowmaster)with "big" cam?

I'm in the Dallas Fort Worth area and happen to have a complete Mufflex system for sale. It is in great shape. I have the flowmaster version single out with hide away tip. I have a custom 3" to 4" Y pipe custom designed by Nicks Muffler shop in Plano that is designed for max flow. It will fit several types of headers. Let me know if your intersted or know if anyone is. I'm in North Richland Hills (Fort Worth).. I've included a picture link below. Let me know what you have for trade.. I'm interested in any LS1 parts. I'd also take $500 cash.

http://pages.sbcglobal.net/bigeller/...lowmaster2.jpg

Thanks
Michael

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Old May 13, 2003 | 02:27 AM
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Default Re: Anyone have Mufflex 4" (Flowmaster)with "big" cam?

Question for you all: isn't it pointless to have 4" exhuast since aftermarket Ypipes are only 3? Or do you find 4" Y-pipes?
I am having a friend's shop fab up a one-off dual 3" to 4" Y-pipe. Basically, we're starting with a handful of 304 stainless .065-wall 3" mandrel bends, some 3" stainless tubing, and a Flowmaster Y.

Yeah, I know, the .065-wall tubing and bends is pretty heavy, but I shouldn't EVER have to worry about this Y-pipe rusting/rotting or getting crushed by something stupid.
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Old May 13, 2003 | 03:10 PM
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Default Re: Anyone have Mufflex 4" (Flowmaster)with "big" cam?

Question for you all: isn't it pointless to have 4" exhuast since aftermarket Ypipes are only 3? Or do you find 4" Y-pipes?
Most longtube headers have 3" collectors, so naturally the y-pipe is 3". If you run a typical 3" catback from the y-pipe, you're merging two 3" pipes into one. It obviously flows better if your y-pipe has the dual 3" into single 4" collector (like the Mufflex and QTP for example) and use a 4" exhaust.
Then there's always duals...
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