03-16-2014, 04:16 PM
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CC Member
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Join Date: Sep 2006
Location: Highland,
MI
Cobra Make, Engine:
Posts: 221
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Not Ranked
Personally, I don't think you gain anything with a 3" flowpath muffler unless your engine is putting out over 480 or so HP. You can lose flow velocity on a gas engine when the exhaust system diameter is too large - opposite is generally true with a diesel. Any other V-8 Cobra system 2.5" should be optimum diameter.
Also, statistically probably 97% of all the Cobrapacks I build & sell are with packing material to absorb the sound. All the 3" core mufflers are going to be loud & deep, but with packing will absorb dBA's & not hurt the flow any. The packing will definitely help soften the noise some.
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