Why when you change a motorcycles air filter and exhaust you need to re-jet the carb and on a car you don't?

The motorcycle does not have an ECU that works it's maps out for it. A motorcycle needs to be mechanically induced to accept more fuel by being re-jetted and not through any sort of an electronic process. In a car you can remap the ECU to deliver more fuel but in most cases an exhaust and intake for a car do not throw it off as much and this is not needed; though more power can be gained by mapping correctly. Motorcycles will gain a lot from an unrestricted exhaust and will most likely lean out without a proper jet change.

Carbs have jets fuel injected does not.

nicely it quite relies upon on the place you tension. If that is dusty or your driving by way of a shape section it may desire to be fairly regularly. I as quickly as had a pal pull up in his daughters Saturn. He replaced into fairly offended because of the fact the automobile replaced into rather working had poor ability and gasoline mileage. I informed him it replaced into his air clear out(he did no longer believe me). I bumped off it to tutor him and he pronounced "it would not look that grimy" I then decrease it in 0.5 to tutor that it replaced into certainly clogged with airborne dirt and dust in the middle of the clear out media. some late kind autos (like the Saturn) have very restrictive airflow. After changing the clear out he pulled out of the parking lot and chirped the tires! i could recommend a ok&N substitute drop in clear out or in case you choose a ok&N chilly air intake gadget. for approximately $40.00 (maximum autos) you will get a miles extra effective clear out that is wiped sparkling rather of replaced(my ok&N is 6 years previous and nonetheless works tremendous) a cleansing kit is $20.00 and lasts a for a protracted long term. you will additionally see a modest progression in overall performance and gasoline mileage.