NFS Underground 2 help

don't know what adds to your NOS and what doesn't? click here.^

KEY: - means that this action takes from NOS bar. + means that the longer this trick is held, the more NOS is added to your NOS bar. ***** means that this trick can be done more than once to add a multiplier up to how many stars are shown (ie. ***** means that it can have up to 5 multipliers) to at least double the amount of NOS added to your NOS bar.