Flowmaster muffler on a SLP dual/dual?
Thread Starter
Joined: Jan 2002
Posts: 4,069
Likes: 74
From: Casselberry FL
Flowmaster muffler on a SLP dual/dual? I have the opportunity to buy an SLP dual/dual with a flowmaster muffler. Thing is I don't know which model is on it and how the sound will compare to the normal muffler which comes on the D/D. Ideally I wanted the quiet interior and free-flowing nature for which the OEM version is known.
Are there markings on the muffler which will indicate which Series it is from? Would there be a Flowmaster Series which would be about the same as the model SLP uses? They don't use Flowmaster on OEM cat-backs, do they?
Are there markings on the muffler which will indicate which Series it is from? Would there be a Flowmaster Series which would be about the same as the model SLP uses? They don't use Flowmaster on OEM cat-backs, do they?
I just recently went from the Flowmaster 80 series to the SLP Dual/Dual. My Flowmaster was just too loud with the long tubes that I installed. It also had too much "drone" inside the car. I love my Dual/Dual. It gives a great sound and is very quiet at cruise but sounds good when you open it up. It is also supposed to flow better than the Flowmaster. I think that the only dual outlet muffler that Flowmaster makes for the 4th gen F-body is the 80 series. I'm not sure if it would have any marking or not. I would suggest getting a true Dual/Dual system, I think you will be pleased.
Thread Starter
Joined: Jan 2002
Posts: 4,069
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From: Casselberry FL
I had read that the 80 series was too restrictive but that the 10 series flowed great.
I've got other concerns now with the engine noise I'm getting. I'm going to put this off.
I've got other concerns now with the engine noise I'm getting. I'm going to put this off.
TECH Regular
Joined: Feb 2003
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From: Pasadena, CA
Originally Posted by SouthFL.02.SS
Common knowledge around here that the Flowmaster 80 series muffler is one of the worst flowing mufflers, while the SLP D/D flows very well for a quiet muffler.
TECH Fanatic
Joined: Oct 2003
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From: Northern Va
Originally Posted by JimMueller
I had read that the 80 series was too restrictive but that the 10 series flowed great.
I've got other concerns now with the engine noise I'm getting. I'm going to put this off.
I've got other concerns now with the engine noise I'm getting. I'm going to put this off.
10 series is a race style muffler, flowmasters version of the bullet muffler if you will. its not a cross flow design, you have to install those 10 series with true duals.
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Verdad Gallardo TECH Regular
Joined: Feb 2003
Posts: 430
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From: Pasadena, CA
Originally Posted by JimMueller
OK, how about buying the d/d muffler separately and welding it into the used tubing? Any idea which muffler that would be on SLP's site?
P.S. The dual/dual muffler is 3" inlet, 2.5" outlet FYI.
Last edited by Camaro SS 2002; Jul 8, 2004 at 10:45 AM.
IMO the D/D is the best sounding/looking catback I've seen...and I've seen and heard just about all of the popular ones. It really kills the rasp with LTs. The blowmaster sounds aweful with LTs and no cats IMO. The 3" inlet can be adapted to the 2.75" stock intermediate pipe pretty easily.
