4 Stroke Engine Tuning?? (Aprilia Sportcity 125)

[sportcity_125]

hi there, ive just bought a 2004 Aprilia Sportcity 125.
i want to tune the engine but to be honest i dont know where to start.
i have the choice of racing clutches, cylinder kits, big bore kits, remapped ecu/cdi units, variators, clutch rollers, exhaust cans, engine and exhaust valves?

anybody know where i should start?
i am looking for quicker acceleration but also better top speed.
shud i bore it up to a 210cc or just rape it with tuning parts

 

[tiba_karotsu]

fit the biggest bore up kit without modifying the crankcase, install the ECU & vario, much better if you have a gear up kit too. save teh cam & valves for later. you can also have the head ported for more airflow & power.

 

[Velo]

Hey there m8.

Have a wisit past my projekt http://forum.scooterforum.net/forum/f88/gilera-runner-209-ccm-quattro-valve-146315/ and gain some inspiration.

Exhaust, karb, vario and cylinder will give you much If you change the cam you will need the ECU allso, and the springs for the valves.

Enjoy.