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2004 to 2008 F-150 and Mark-LT
4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs.


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  #1  
Old Thu, October 11th, 2012, 10:30 AM
RevoErick RevoErick is offline
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Default Thinking of changing exhaust

I have a 2008 F150 Crew 4x4 with the 87P & 87T custom tunes. They were written with the truck having a true dual exhaust. The current mufflers are side by side and are going bad. I was thinking of going with a dual in dual out flowmaster muffler. Will this affect my tunes or will I need to adjust anything on the setpoints? Thanks.
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Old Thu, October 11th, 2012, 01:03 PM
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Longshot270 Longshot270 is offline
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I don't remember exactly but I don't think you will. I left a message for Cody, hopefully he can chime in.
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Old Thu, October 11th, 2012, 08:16 PM
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Longshot270 Longshot270 is offline
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Cody just told me that you don't need an adjustment.
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Old Fri, October 12th, 2012, 01:31 PM
RevoErick RevoErick is offline
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Thanks for the info. It's very much appreciated.
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