does changing the exhaust system to where the air flow is improved affect the vehicles fuel economy?
The only current motorcycle I know of that is automatic is Ridley . Do a Google search with that word .
It should improve the fuel mileage,but not by much.
Yes, assuming you mean the air flow through the exhaust system.an internal combustion engine may be considered to be an 'air pump' since it uses about 16 times as much air as gasoline.in a sense, the gasoline is there just to make the air catch on fire. Anyway, the better the air flows in and then out, the better.the question is, what's it worth? Say you spend $1000 on a better flowing exhaust.how long will it take to recover that money? If it increases the economy by say 1%, it could take years.
A modern car no. An old car, maybe but the exhaust system is part if the rest of the system and changing one part of the system without understanding or changing something else in the system could end up hurting. A modern cars EFI system constantly monitors the air temperature, density, and volume going into the engine and then injects the exact amount of fuel needed for the situation. It also monitors the exhaust to confirm it did what the computer expected, if its not it can make further adjustments as needed to keep everything optimum. So that means that at a steady cruise going down the road you are not going to see any chance in MPG with a factory exhaust and air intake vs. a fancy aftermarket one. Now if you are going to try and operate your engine at its maximum output that is where making it easier to get the air in and out is going to make a difference but you will also need to make sure the system is going to be able to deliver enough fuel to go with all that extra air. Properly done modifications like that should help your off the line performance and should not hurt your mpg but they wont help it either and if you are all about the cost its going to be a waste of money. Even if it does save you a slight amount its going to take forever to pay off. You also want to check into your local regulations it may not be legal to modify your car or it may cost you a lot more to legally modify your car. You would be better off to save money my skipping the fast food drive thru. Less $ out of your pocket and less pounds on you which means less pounds in your car which will equal more MPG.
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