Reply To: My motorcycle loses power at high RPMs and full throttle – Hyosung GTR
I’m happy with that top speed, especially since the engine runs smoothly at high RPM.
Now, since I shouldn’t use the bike without the air filter, I will try a K&N to see if it does not reduce airflow too much. So, the engine running rich is due to the 125cc intake, isn’t it? Because everything else is “stock” for a 250cc engine (main jets and pilot jets). Well, the exhaust headers and muffler are the 125cc ones.
Another problem that I have to solve is the tachometer. I will see what I can do about that.
I think we are close to making the bike run perfectly. Thank you very much for your help.