just want to know the max rpm on the stage 6 pro exhaust as it dosent seem to go as fast as my polini 4 race pipe it is better of mark ..but slower top end ...should i up the roller weight ...it has 4.7 atm
Heres all you need to know mate http://www.pedparts.co.uk/ekmps/shops/thebikeshop/resources/Design/dyn.jpg