2003 6L exaust - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 3 (permalink) Old 11-25-2006, 03:36 AM Thread Starter
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Question 2003 6L exaust

i was gettin ready to buy a mbrp 4in turbo back pipe but i herd if u take the cat out and well i already got that out but if i take the muffler out it will whistle much louder but is that bad for it:Thumbup:
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post #2 of 3 (permalink) Old 11-25-2006, 04:25 AM
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Nope, just harder on your ears over time.
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post #3 of 3 (permalink) Old 11-25-2006, 11:37 AM
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Gutted cat can creat a drone sound under the cab, and for some it can annoying.

My reccomendation is get the 4" exhaust that keeps the cat, and buy a Cat delete pipe, in case you ever need to re-install the cat.

Let me know if I can help some more, shoot me a PM.

05/2009 F350 2WD CC DUALLY EBONY (Inside/Out) dropped 3/5 on 305/45-22 - dubbed "Cat Woman"
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