oi if u wana go faster on ur pitpro heres wat ive dun:
got a 17 tooth sprocket for the front
got a carby wit a round float bowl instead of square
got a bigger jet.from 0.95 mm to1.75 mm jet.
got a fmf power pipe
got a shorter pipe between the heads n the carby making the fuel get there...
umm i did hav a adjustable 1 but it aint do shite!!
seriously they make like no difference!!n if ur lucky the might just give u a cleaner spark.they hav tested them n ive talked to alot of ppl n they say "they cannot feel any differce wat so eva!!"
well i guess its just a peresonal choice soo...