Question about 2003 kawasaki Z 1000
There is no Back Pressure from a freer flowing muffler. These engines were designed with a certain amount of Back Pressure factored in. There IS a sensor in the system. The sensor, will read that the fuel/air mixture needs to be leaned out.
Leaning out causes hotter combustion area components. The combustion chamber in the head, the exhaust, intake valve faces, and seats, plus the spark plug electrodes.
The average temperature on a valve face can exceed 1600 degrees Fahrenheit. (Exhaust)
Excess heat will also cause lack of lubricity in-between the piston, and cylinder wall.
This causes galling of the piston sides, and cylinder walls.
Eventually everything 'freezes' inside, and your engine comes apart like an A-Bomb!
If you want to play, you have to pay. Either have a tuner do it regularly, or buy the tool, and learn how to use it. (Or go back to the stock mufflers)
Posted on Jul 25, 2009
The reason why the engine is burning lean to begin with is that the reduction in backpressure is causing more air to be drawn into the combustion chamber than before. This means the mixture is lean and results in overheating of exhaust valves and seats.
Your engine PCM will be able to adjust for slight changes in backpressure on the exhaust, but not enough to compenstate for the difference a peformance exhaust will make.
You engine will wear at a faster rate if it runs leaner than normal.
Posted on Jul 25, 2009
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Posted on Jan 02, 2017
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