| Re: 2000 SiR, RPM question depends what gear your in lol and what engine, im assuming you have a b16a2. i dont have one of those I have a B16A SiRII (JDM Engine) and when im at 100km/h in 5th gear im at about 3800 RPM i think. at 120km/hr im at about 4200 RPM I am considering putting in a LS 5th gear to help out MPG's, its stupid to race in 5th gear theres no need for it to be as short as it is. not sure about the USDM b16a2 though |