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Old Aug 31, 2004 | 09:14 PM
  #1  
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V10FORD4X4
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Flowmaster 40 series

I am planing on purchasing a FM 40 with a single in dual out. I have no clue what size i should get. Can someone help me out pleae.
 
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Old Aug 31, 2004 | 11:24 PM
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Most who use the dual outs uses a 3" in and 2.5" out.
 
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Old Sep 1, 2004 | 10:27 AM
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I have a Flowmaster 40 Delta Flow Single 3" in and 2.5" out, the pipes exit the rear on each side of the hitch, the pipes are finished with with 3" OD x 12" Long SS tips. In the cab it is very quiet, you can here it, but not to loud. On the outside it is perfect.
 
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Old Sep 1, 2004 | 08:30 PM
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ok thank you thats what im going to order. thanks again
 
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Old Sep 2, 2004 | 09:33 AM
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I have a FM 40, 3" in and duaL 2.25" out exiting out the back with 3.5" slash tips. Sounds great. Good tone for a V10. Loud enough going up through the gears but barely noticeable at highway spped
 
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