Gtr 1000 losing power I have to keep changing down gears to get top end back up I have stage 3 jet kit and separate aftermarket air filters could this be a vacuum problem?
Go back to basics with the carby/s they are designed to give top performance at all rpms and torque settings for the engine accordingly the jet sizing has been carefully set to give that performance if you alter that sizing believing that bigger jets means more power , then you are altering the air/fuel ratio it is all well and good if you have fitted a real lumpy cam as that gets extra air for the bigger jets if you want better power at top end then spend a dollar in a bike shop that has a dyno so that the jets sizes can be selected and tested in a running engine under load
Answers & Comments
Go back to basics with the carby/s
they are designed to give top performance at all rpms and torque settings for the engine
accordingly the jet sizing has been carefully set to give that performance
if you alter that sizing believing that bigger jets means more power , then you are altering the air/fuel ratio
it is all well and good if you have fitted a real lumpy cam as that gets extra air for the bigger jets
if you want better power at top end then spend a dollar in a bike shop that has a dyno so that the jets sizes can be selected and tested in a running engine under load