It depends. The fuel injected motorcycle will already have a management system, but you may need to modify its behaviour if the exhaust modifications affect the fueling significantly. There are many devices available on the market to achieve this, the most popular is probably the Power Commander by Dynajet.
Change your exhaust pipes.
yes they can produce more power or torque but after you change exhausts you usually have to change jets also
The exhaust system will change the air flow to the engine so the power commander is needed to re-map or calibrate the system again so that it is optimized. If you don't re-map the system then you will not get the full benefits of the exhaust.
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The constraints on the management of change?
Power Commanders are a common installation on Fuel Injected Motorcycles, for example any Yamaha r6 made after 2003.Power Commanders allow you to change out your fuel map ( i.e. change the fuel/air ratio) on your motorcycle for your needs.It is a way to even out your acceleration or increase horsepower. very common amongst racers.especially if you are going to upgrade your exhaust system and air filter you will need to adjust how much fuel is going to the throttle bodies or you will not gain the performance from your other additions.
Which motorcycle?
yes
Well, any change to flow of the exhaust gases will change their sound. That said, how much of a change in sound depends on how much you change the flow. Tips, normally go over an exhaust pipe and perhaps extend it a very small amount. It is unlikely this would cause much change...up or down.
You do not have to rejet when using Slip-On pipes. I have an 1100 and an 650 for my wife and we have had Slip-On Cobra Pipes for a few years now.
in my motorcycle maintance book it says to change the oil every 3000km.. how many miles is that
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