Muffler Opinions

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Author Message   Rogers T. Cockrill (Rtcockrill) New Member Username: Rtcockrill Post Number: 1 Registered: 04-2003 Posted on Monday, April 14, 2003 - 01:11 pm:    I've got a 95 3.9 SWB. I am having to replace my muffler, and I am going to put a flowmaster on. Is there any advantage to putting two mufflers on (one for each down pipe and catalytic converter)? I have heard that sometimes an engine needs some backpressure, so i am curious if the 3.9 needs it, or should I put one flowmaster over two on it? Thanks for ya'll's input.   brandon orear (Brandonorear) New Member Username: Brandonorear Post Number: 1 Registered: 04-2003 Posted on Tuesday, April 15, 2003 - 09:03 pm:    I just have one flowmaster on my 95 swb. It sounds great, i don't think you need two, as for the back pressure i'm not sure but i've had no problems.   Brian Stolpa (87hprover) New Member Username: 87hprover Post Number: 16 Registered: 02-2003 Posted on Sunday, May 11, 2003 - 07:11 pm:    I have one flowmster on mine but it is dual in dual out it is a custom setup that works awesome i also have headman headers, but besides that on a rover best upgrade you can do is let the exhaust flow I hear many good things from people who do this   A. Ali (Alia176) Member Username: Alia176 Post Number: 45 Registered: 03-2003 Posted on Wednesday, May 14, 2003 - 11:52 am:    I just installed a 50 series Deltaflow muffler by Flowmaster yesterday. So far it sounds fine. Interior resonance is quite low as compared to my old 3 chamber mustang muffler. Around 1800 there's a bit of droaning then goes away. Exhaust is a tad bit louder but can't tell how much from inside the vehicle. Haven't had a chance to go on a long hwy ride yet but I predict it should be ok. Ali   Shane (Shane) Member Username: Shane Post Number: 60 Registered: 07-2002 Posted on Wednesday, May 14, 2003 - 02:56 pm:    Ali what part number on the flowmaster? What diameter is the inlet/oulet?   A. Ali (Alia176) Member Username: Alia176 Post Number: 47 Registered: 03-2003 Posted on Wednesday, May 14, 2003 - 06:51 pm:    Shane, I don't have the p/n handy, can get it tomorrow. 2.25" inlet center/2.25" outlet offset.   A. Ali (Alia176) Member Username: Alia176 Post Number: 50 Registered: 03-2003 Posted on Thursday, May 15, 2003 - 04:04 pm:    Shane, Here's the p/n: Flowmaster 52457 Ali   Shane (Shane) Member Username: Shane Post Number: 61 Registered: 07-2002 Posted on Thursday, May 15, 2003 - 08:28 pm:    thanks Ali!