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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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#3
Thu, September 29th, 2011, 06:17 PM
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I've tried the youtube option and could not find any good sound clips of anything with headers. I am contemplating going back to a stock muffler if i cannot find anything as this drone is extremely irritating in that rpm range and i will be pulling an RV almost 500mi.le.s with it. The current muffler sounds great at idle or WOT, it's just the mud range rpm's where it is an issue
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