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#1
01-24-2003, 01:43 PM
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Dual exhaust on 6.0 litre HD
I have a 2002 k1500 hd Sierra that has been dualed out with 2 flowmasters. Originally, it had dual pipes running into a single muffler with single out. I have been told that making it a "true dual" will throw the oxygen sensors out of sync, and flowmaster recommends replacing the mufflers with a new one they just came out with: #530504 "big block muffler for 6.0 & 8.4 L hd trucks" . Has anyone else heard this, or are they trying to sell me another muffler?
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#2
03-25-2003, 01:41 PM
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if the o2 sensors are in front of the muffler, they won't notice the difference.
they're trying to sell you a muffler. keep in mind that decreased pressure in the exhaust will equal better flow, but the computer will see that as well. but you won't mess with o2s.
__________________
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#3
01-17-2005, 11:41 PM
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Re: Dual exhaust on 6.0 litre HD
in my 99 6.0 i hve true duals and have no problems
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