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Re: 3inch exhaust reduced?
The short answer would be: It would only help if the single 3" muffler guts/tail pipe are the restriction. If they aren't, you gain nothing.
Spending some time figuring/measuring the inside tubes & opening inside the muffler can be REAL eye opening! Quite often, the manufactures (even BIG well known companies) do all sorts of "cheats" where they use say, a 2 1/2" core in a whole group of mufflers & change just the ends that you see/attach to the pipes...not a problem for a guy with 2 1/4" exhaust or even 2 1/2", but if the engine really needs a 3" & the muffler has a 2 1/2" core area...pipes mean nothing at this point.
You would have to have a pretty nasty engine to need dual 3" exhaust. Also if you do, the words "gas mileage" wouldn't be something you would type very often. I guess I'll leave it at that. Lorne
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