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  #11  
Old 07-25-2009, 12:26 PM
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That's really odd that you are having this issue. Guys have been adding the Mufflex kit to both the single and dual exhaust systems without any MPG problems. They have been using 14", 18" and 24" Magnaflow mufflers. Not sure how going to a muffler shop and having them splice one in would be any different. Makes no sence at all.
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  #12  
Old 07-29-2009, 08:47 AM
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The seller on ebay, selling the Mufflex with the Magnaflow muffler, has perfect feedback and no reported issues........

Last edited by 09 RT RAM; 07-29-2009 at 08:50 AM.
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  #13  
Old 08-01-2009, 12:01 PM
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I finally installed my Mufflex kit and have no such issue. What size muffler were they installing?
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  #14  
Old 08-02-2009, 09:05 PM
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who sells mufflex kit?
kerley
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  #15  
Old 08-03-2009, 10:45 PM
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http://www.mufflex-performance.com/index.html here ya go got mine direct when they first came.
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  #16  
Old 08-04-2009, 11:02 PM
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Quote:
Originally Posted by stever View Post
I just had a magna flow muffler installed on my ram 09 hemi ,but I have a problem according to my evic system my fuel economy just went in the gutter,it is about 3 to 4 miles to the (bad) on highway and city driving .I talked to my dodge dealer and they seem to think that the MDS system does not like the change and it is staying in the 8 cylinder mode..?
thats very odd....

i have flowmaster 40's on my truck and have had no issues at all...
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  #17  
Old 04-15-2011, 06:44 PM
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I know when my mds kicks in .I have a 18" mag flow, milage is about 18 hy , upon slight acc while mds is on have a vibration under 50 mph
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  #18  
Old 04-15-2011, 08:55 PM
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ive had the magnaflow on my truck for over 50,000 miles with no issues
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Old 04-15-2011, 11:10 PM
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could it be a problem with a heavy right foot wanting to hear the muffler. I just installed a CAI and I lost about 1.5 mpg, but I can promise you it is from the foot dilemma.
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  #20  
Old 04-16-2011, 01:42 AM
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Quote:
Originally Posted by 09bighorn View Post
could it be a problem with a heavy right foot wanting to hear the muffler. I just installed a CAI and I lost about 1.5 mpg, but I can promise you it is from the foot dilemma.
lol I had the same problem when I did my CAI, cherry bomb extreme (dumped in front of the passenger tire) and DSP...I've settled down a little since then, but I still like to piss people off at WOT...she's loud lol
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