I just bought Cultus VXR 2007 model, Kindly give me tips about gear changing. While i am driving i am not getting exact idea about to change gear from sound or something else, Is gear changing depends on RPM...? Means i want to change 2nd gear by seeing RPM meter? If yes, so when i need to change 2nd, 3rd or 4th gear with respect to RPM meter? And on what RPM, how much should be the Speed o meter reading? and give me some tips to get maximum performance and Engine Life.