I have bought GS500F K5 few months ago. I have version with 35kW (approx 48hp) and max speed was about 180-190km/h, then I bought Remus exhaust (caliber 54mm, racing).

I have a problem since exhaust instalation, my bike does not accelerate good in upper turns (good at lower), my mechanic advised my to re-jet my bike.

I do not know what to do, to buy dynojet kit or just bigger jets? I was looking this kit, but it is ONLY FOR US. MODELS!!
http://www.dynojet.com/pdf/3156.pdf <- does anyone know

second option is well known dynojet kit for EU. models, but US. have better diagram.
http://www.dynojet.com/pdf/European...i/E3128.001.pdf

My second problem is gear wheel (original is 16) and my bike comes just to 9000rpm (I will rechange it with 15)


I have few questions:
1.Is there any need to synchronize carburettor after re-jetting?
2.What is difference between re-jetting with bigger jet or dynojet kit?
3.Does anyone know difference between US. and EU. models?
4.What is your max speed?

Please help me!!!

Best Regards, David

PS. Sorry for my English, because I am comming from foreign country (Slovenia).

(Entschuldigen Sie, weil diese text in Englisch ist, ich kann nicht gut Deutsch sprechen).

Schone Grusse, David