By all comments I guess that nobody was interested what is going on inside the engine after modifying stock or replacing with after market exhaust. By my knowledge mixture of fuel and air that is one thing and the moment of ignition is the second one. So when you change or modify exhaust so all previous settings should be modified also. If not combustion will take place not only in combustion chamber but in exhaust also and that will cause not only pipes blueing but also burning out of valves and valve sockets and that will lead to further engine damages. Just try to run long distance in burning heat without cool drinks and with mask on your face.
I am preparing myself and my machine to exhaust change so I did some research.
But I still need to know more
What kind of rejet kit I have to use (prefer to do not ruin my wallet) and where around Reading I can find qualified workshop with rolling road. If you have any info please let me know.
